{"product_id":"fastspell-prompsit","title":"FastSpell","description":"\u003cstyle\u003e\n.guidaio-v3 { --gv3-bg:#f6f5fb;--gv3-surface:#fff;--gv3-surface-soft:#fbfaff;--gv3-ink:#14132b;--gv3-ink-2:#2b2a4a;--gv3-muted:#6c6a8a;--gv3-line:#ecebf5;--gv3-line-2:#e0deef;--gv3-brand:#5b3df5;--gv3-brand-2:#7c63ff;--gv3-brand-soft:#efeaff;--gv3-brand-ink:#2c1d8a;--gv3-ok:#0f8a5a;--gv3-ok-soft:#e6f7ee;--gv3-warn:#b16800;--gv3-warn-soft:#fff3dc;--gv3-bad:#b3261e;--gv3-bad-soft:#fde7e6;--gv3-radius-lg:22px;--gv3-radius:16px;--gv3-radius-sm:10px;--gv3-shadow-sm:0 1px 2px rgba(20,19,43,.04);--gv3-shadow:0 12px 30px rgba(53,38,124,.07);\n  background:radial-gradient(1200px 600px at 80% -10%,rgba(124,99,255,.18),transparent 60%),radial-gradient(900px 500px at -10% 5%,rgba(91,61,245,.12),transparent 60%),var(--gv3-bg);\n  color:var(--gv3-ink);font-family:Inter,system-ui,-apple-system,\"Segoe UI\",Roboto,sans-serif;font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;\n  max-width:1240px;margin:0 auto;padding:24px 16px 64px;border-radius:var(--gv3-radius-lg);}\n.guidaio-v3 *,.guidaio-v3 *::before,.guidaio-v3 *::after{box-sizing:border-box}\n.guidaio-v3 a{color:var(--gv3-brand);text-decoration:none}.guidaio-v3 a:hover{text-decoration:underline}\n.guidaio-v3 img{max-width:100%;display:block}\n.guidaio-v3 h1,.guidaio-v3 h2,.guidaio-v3 h3,.guidaio-v3 h4{font-family:\"Space Grotesk\",Inter,sans-serif;letter-spacing:-.01em;margin:0;color:var(--gv3-ink)}\n.guidaio-v3 svg{display:inline-block;vertical-align:middle}\n.guidaio-v3 .hero{position:relative;background:radial-gradient(700px 320px at 90% 0%,rgba(124,99,255,.18),transparent 70%),linear-gradient(180deg,#fff 0%,#fbfaff 100%);border:1px solid var(--gv3-line);border-radius:var(--gv3-radius-lg);box-shadow:var(--gv3-shadow);padding:32px;overflow:hidden}\n.guidaio-v3 .hero-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(280px,1fr);gap:28px;align-items:start}\n.guidaio-v3 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24px;padding:10px;background:rgba(255,255,255,.85);border:1px solid var(--gv3-line);border-radius:22px;box-shadow:var(--gv3-shadow-sm);display:flex;flex-wrap:wrap;gap:8px;overflow-x:auto}\n.guidaio-v3 .toc a{padding:8px 14px;border-radius:999px;font-size:13px;font-weight:600;color:var(--gv3-brand-ink);background:#fff;white-space:nowrap;border:1px solid var(--gv3-line-2);box-shadow:var(--gv3-shadow-sm);transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease}\n.guidaio-v3 .toc a:hover{background:linear-gradient(135deg,var(--gv3-brand) 0%,var(--gv3-brand-2) 100%);color:#fff;border-color:transparent;transform:translateY(-2px) scale(1.04);box-shadow:0 8px 18px rgba(91,61,245,.25);text-decoration:none}\n.guidaio-v3 .justify{text-align:justify;text-justify:inter-word;hyphens:auto}\n.guidaio-v3 a.chip,.guidaio-v3 a.chip:hover{text-decoration:none}\n.guidaio-v3 a.chip{transition:transform .15s ease,box-shadow .15s ease,filter .15s ease;cursor:pointer}\n.guidaio-v3 a.chip:hover{transform:translateY(-1px);box-shadow:0 4px 10px rgba(53,38,124,.12);filter:brightness(.96)}\n.guidaio-v3 section.block{background:var(--gv3-surface);border:1px solid var(--gv3-line);border-radius:var(--gv3-radius-lg);padding:32px;margin-top:22px;box-shadow:var(--gv3-shadow-sm);scroll-margin-top:90px}\n.guidaio-v3 section.block.soft{background:var(--gv3-surface-soft)}\n.guidaio-v3 section.block .head{margin-bottom:20px}\n.guidaio-v3 section.block .eyebrow + h2{margin-top:10px}\n.guidaio-v3 section.block h2{font-size:24px;color:var(--gv3-ink)}\n.guidaio-v3 section.block .lead{margin-top:8px;color:var(--gv3-muted);max-width:70ch}\n.guidaio-v3 .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}\n.guidaio-v3 .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}\n.guidaio-v3 .rich p{margin:0 0 14px}.guidaio-v3 .rich p:last-child{margin:0}\n.guidaio-v3 ul.brand-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}\n.guidaio-v3 ul.brand-list li{position:relative;padding-left:26px;color:var(--gv3-ink-2)}\n.guidaio-v3 ul.brand-list li::before{content:\"\";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:999px;background:var(--gv3-brand-soft);box-shadow:inset 0 0 0 4px var(--gv3-brand)}\n.guidaio-v3 ol.steps{list-style:none;counter-reset:s;padding:0;margin:0;display:grid;gap:14px}\n.guidaio-v3 ol.steps li{counter-increment:s;position:relative;padding-left:42px;color:var(--gv3-ink-2);min-height:30px}\n.guidaio-v3 ol.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:999px;background:linear-gradient(135deg,var(--gv3-brand) 0%,var(--gv3-brand-2) 100%);color:#fff;display:grid;place-items:center;font-weight:700;font-size:13px;box-shadow:0 6px 14px rgba(91,61,245,.25)}\n.guidaio-v3 .feature-card{border:1px solid var(--gv3-line);border-radius:var(--gv3-radius);padding:16px;background:#fff;display:grid;gap:8px}\n.guidaio-v3 .feature-card .icbox{width:36px;height:36px;border-radius:12px;background:var(--gv3-brand-soft);color:var(--gv3-brand-ink);display:grid;place-items:center}\n.guidaio-v3 .feature-card .ftitle{font-weight:700;color:var(--gv3-ink);font-size:15px}\n.guidaio-v3 .feature-card .fbody{color:var(--gv3-muted);font-size:13px}\n.guidaio-v3 .pc{border-radius:var(--gv3-radius);padding:20px;border:1px solid var(--gv3-line)}\n.guidaio-v3 .pc.pros{background:var(--gv3-ok-soft);border-color:#b8e8cc}\n.guidaio-v3 .pc.cons{background:var(--gv3-bad-soft);border-color:#f5c2c0}\n.guidaio-v3 .pc h3{font-size:17px;display:flex;align-items:center;gap:8px;margin-bottom:12px}\n.guidaio-v3 .pc.pros h3{color:var(--gv3-ok)}.guidaio-v3 .pc.cons h3{color:var(--gv3-bad)}\n.guidaio-v3 .pc ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}\n.guidaio-v3 .pc li{display:flex;gap:8px;align-items:flex-start;color:var(--gv3-ink-2);font-size:14px}\n.guidaio-v3 .pc li svg{flex:0 0 auto;margin-top:3px}\n.guidaio-v3 .pc.pros li svg{color:var(--gv3-ok)}.guidaio-v3 .pc.cons li svg{color:var(--gv3-bad)}\n.guidaio-v3 .bestnot{display:grid;grid-template-columns:1fr 1fr;gap:16px}\n.guidaio-v3 .bestnot .card{border:1px solid var(--gv3-line);border-radius:var(--gv3-radius);padding:20px;background:#fff}\n.guidaio-v3 .bestnot h3{display:flex;align-items:center;gap:8px;font-size:17px;margin-bottom:12px}\n.guidaio-v3 .bestnot .for h3{color:var(--gv3-ok)}.guidaio-v3 .bestnot .not h3{color:var(--gv3-warn)}\n.guidaio-v3 .plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}\n.guidaio-v3 .plan{border:1px solid var(--gv3-line);border-radius:var(--gv3-radius-lg);padding:22px;background:#fff;display:grid;gap:10px;position:relative}\n.guidaio-v3 .plan.featured{border-color:#c7baff;background:linear-gradient(180deg,#fff 0%,#f7f3ff 100%);box-shadow:var(--gv3-shadow)}\n.guidaio-v3 .plan .pill{position:absolute;top:-12px;right:14px;background:linear-gradient(135deg,var(--gv3-brand) 0%,var(--gv3-brand-2) 100%);color:#fff;font-size:11px;font-weight:700;letter-spacing:.06em;padding:5px 9px;border-radius:999px;text-transform:uppercase}\n.guidaio-v3 .plan .pname{font-family:\"Space Grotesk\";font-weight:700;font-size:17px}\n.guidaio-v3 .plan .pprice{font-family:\"Space Grotesk\";font-size:24px;font-weight:700}\n.guidaio-v3 .plan .pprice small{font-size:13px;font-weight:500;color:var(--gv3-muted)}\n.guidaio-v3 .plan ul{list-style:none;padding:0;margin:6px 0 0;display:grid;gap:8px}\n.guidaio-v3 .plan ul li{display:flex;gap:8px;align-items:flex-start;color:var(--gv3-ink-2);font-size:14px}\n.guidaio-v3 .plan ul li svg{color:var(--gv3-brand);flex:0 0 auto;margin-top:3px}\n.guidaio-v3 .pricing-extras{margin-top:16px;display:grid;gap:10px}\n.guidaio-v3 .offer{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border-radius:12px;background:#fff7e6;border:1px solid #f1d6a3;color:var(--gv3-warn);font-size:14px}\n.guidaio-v3 .offer svg{flex:0 0 auto;margin-top:2px}\n.guidaio-v3 .trust-grid{display:grid;grid-template-columns:2fr 1fr;gap:16px}\n.guidaio-v3 .trust-grid .col{display:grid;gap:14px}\n.guidaio-v3 .trust-card{background:#fff;border:1px solid var(--gv3-line);border-radius:var(--gv3-radius);padding:20px}\n.guidaio-v3 .trust-card h3{font-size:15px;margin-bottom:10px}\n.guidaio-v3 .kv{display:grid;grid-template-columns:180px 1fr;gap:12px;padding:10px 0;border-top:1px solid var(--gv3-line)}\n.guidaio-v3 .kv:first-child{border-top:0;padding-top:0}\n.guidaio-v3 .kv .k{color:var(--gv3-muted);font-size:13px}\n.guidaio-v3 .kv .v{color:var(--gv3-ink);font-size:14px}\n.guidaio-v3 .availability{display:grid;grid-template-columns:1fr 1fr;gap:16px}\n.guidaio-v3 .availability .card{border:1px solid var(--gv3-line);border-radius:var(--gv3-radius);background:#fff;padding:18px}\n.guidaio-v3 .flag-row{display:flex;flex-wrap:wrap;gap:8px}\n.guidaio-v3 .flag{display:inline-flex;align-items:center;gap:5px;padding:5px 10px;border-radius:999px;background:#fff;border:1px solid var(--gv3-line-2);font-size:13px;color:var(--gv3-ink-2)}\n.guidaio-v3 section.block.watch{background:#fffaf0;border:1px solid #f1d6a3}\n.guidaio-v3 section.block.watch .head h2{color:var(--gv3-warn)}\n.guidaio-v3 .setup-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}\n.guidaio-v3 .setup-card{background:#fff;border:1px solid var(--gv3-line);border-radius:var(--gv3-radius);padding:20px}\n.guidaio-v3 .integrations{display:flex;flex-wrap:wrap;gap:8px}\n.guidaio-v3 .integration{display:inline-flex;align-items:center;gap:6px;padding:7px 11px;border-radius:12px;background:#fff;border:1px solid var(--gv3-line-2);color:var(--gv3-ink-2);font-size:13px;font-weight:600}\n.guidaio-v3 .company-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:16px}\n.guidaio-v3 .company-card{border:1px solid var(--gv3-line);border-radius:var(--gv3-radius);background:#fff;padding:20px}\n.guidaio-v3 .timeline{display:grid;gap:8px;margin:8px 0 0}\n.guidaio-v3 .timeline .ev{padding:10px 14px;border-radius:12px;background:var(--gv3-brand-soft);color:var(--gv3-brand-ink);font-weight:600;font-size:14px;display:flex;align-items:center;gap:8px}\n.guidaio-v3 .social-row{display:flex;gap:8px;flex-wrap:wrap}\n.guidaio-v3 .social{width:36px;height:36px;border-radius:12px;border:1px solid var(--gv3-line-2);background:#fff;display:grid;place-items:center;color:var(--gv3-ink-2)}\n.guidaio-v3 .social:hover{background:var(--gv3-brand-soft);color:var(--gv3-brand-ink);border-color:#d6cdfb}\n.guidaio-v3 .res-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}\n.guidaio-v3 .res{display:flex;gap:10px;align-items:center;padding:10px 12px;border-radius:12px;border:1px solid var(--gv3-line);background:#fff;color:var(--gv3-ink-2);font-size:13px}\n.guidaio-v3 .res:hover{border-color:#d6cdfb;background:#fbfaff;text-decoration:none}\n.guidaio-v3 .res svg{color:var(--gv3-brand);flex:0 0 auto}\n.guidaio-v3 .res .url{color:var(--gv3-muted);font-size:11px;word-break:break-all}\n.guidaio-v3 .res .res-text{display:grid}\n.guidaio-v3 .alts{display:flex;flex-wrap:wrap;gap:8px}\n.guidaio-v3 .alt{display:inline-flex;align-items:center;gap:8px;padding:9px 13px;border-radius:14px;background:#fff;border:1px solid var(--gv3-line-2);font-weight:600;color:var(--gv3-ink-2);font-size:14px}\n.guidaio-v3 .alt .av{width:24px;height:24px;border-radius:8px;background:linear-gradient(135deg,#c7baff 0%,#efeaff 100%);display:grid;place-items:center;font-size:12px;font-weight:700;color:var(--gv3-brand-ink)}\n.guidaio-v3 .faq{display:grid;gap:10px}\n.guidaio-v3 .faq details{background:#fff;border:1px solid var(--gv3-line);border-radius:var(--gv3-radius);padding:14px 16px}\n.guidaio-v3 .faq summary{cursor:pointer;list-style:none;font-weight:700;color:var(--gv3-ink);display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:15px}\n.guidaio-v3 .faq summary::-webkit-details-marker{display:none}\n.guidaio-v3 .faq summary svg{color:var(--gv3-brand)}\n.guidaio-v3 .faq .ans{color:var(--gv3-muted);margin-top:10px;font-size:14px}\n.guidaio-v3 section.block.conclusion{background:radial-gradient(700px 320px at 0% 0%,rgba(124,99,255,.18),transparent 60%),linear-gradient(135deg,#1c163a 0%,#2c1d8a 100%);color:#fff;border-color:#2c1d8a}\n.guidaio-v3 section.block.conclusion .head h2{color:#fff}\n.guidaio-v3 section.block.conclusion .lead,.guidaio-v3 section.block.conclusion .rich p{color:rgba(255,255,255,.88)}\n.guidaio-v3 section.block.conclusion .rich strong,.guidaio-v3 section.block.conclusion .rich b{color:#fff}\n.guidaio-v3 section.block.conclusion .eyebrow{background:rgba(255,255,255,.14);color:#fff}\n.guidaio-v3 section.block.conclusion .btn-secondary{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.25)}\n@media (max-width:1080px){.guidaio-v3 .hero-grid,.guidaio-v3 .trust-grid,.guidaio-v3 .company-grid,.guidaio-v3 .setup-grid,.guidaio-v3 .availability{grid-template-columns:1fr}.guidaio-v3 .grid-3,.guidaio-v3 .res-grid,.guidaio-v3 .plan-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}\n@media (max-width:700px){.guidaio-v3{padding:12px 8px 48px}.guidaio-v3 .hero{padding:20px}.guidaio-v3 section.block{padding:20px}.guidaio-v3 .grid-2,.guidaio-v3 .grid-3,.guidaio-v3 .res-grid,.guidaio-v3 .plan-grid,.guidaio-v3 .bestnot,.guidaio-v3 .availability{grid-template-columns:1fr}.guidaio-v3 h1.title{font-size:28px}}\n\u003c\/style\u003e\n\u003cdiv class=\"guidaio-v3\" itemscope itemtype=\"https:\/\/schema.org\/SoftwareApplication\"\u003e\n\u003cmeta itemprop=\"name\" content=\"FastSpell: Open-Source Language ID for Similar Languages\"\u003e\n\u003cmeta itemprop=\"description\" content=\"FastSpell is a free GPL-3.0 Python library that combines fastText and Hunspell to identify 68 languages and tell similar ones apart. pip install fastspell.\"\u003e\n\u003cdiv class=\"hero\"\u003e\u003cdiv class=\"hero-grid\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hero-head\"\u003e\u003cdiv class=\"name-block\"\u003e\n\u003cspan class=\"eyebrow\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpath d=\"m12 3-1.9 5.8a2 2 0 0 1-1.3 1.3L3 12l5.8 1.9a2 2 0 0 1 1.3 1.3L12 21l1.9-5.8a2 2 0 0 1 1.3-1.3L21 12l-5.8-1.9a2 2 0 0 1-1.3-1.3Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Translation Language · Localization Internationalization\u003c\/span\u003e\u003ch1 class=\"title\" itemprop=\"name\"\u003eFastSpell\u003c\/h1\u003e\n\u003cp class=\"lede justify\" itemprop=\"description\"\u003eFastSpell is a free GPL-3.0 Python library that pairs \u003cb\u003efastText\u003c\/b\u003e detection with \u003cb\u003eHunspell\u003c\/b\u003e spell-checking to tell closely related languages apart, giving NLP and corpus teams a targeted language identifier that runs entirely on their own machine.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"badge-row\"\u003e\n\u003cspan class=\"badge ok\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003cpath d=\"m9 12 2 2 4-4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Active\u003c\/span\u003e\u003cspan class=\"badge brand\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpolyline points=\"20 12 20 22 4 22 4 12\"\u003e\u003c\/polyline\u003e\u003crect x=\"2\" y=\"7\" width=\"20\" height=\"5\"\u003e\u003c\/rect\u003e\u003cline x1=\"12\" y1=\"22\" x2=\"12\" y2=\"7\"\u003e\u003c\/line\u003e\u003cpath d=\"M12 7H7.5a2.5 2.5 0 0 1 0-5C11 2 12 7 12 7z\"\u003e\u003c\/path\u003e\u003cpath d=\"M12 7h4.5a2.5 2.5 0 0 0 0-5C13 2 12 7 12 7z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Free plan\u003c\/span\u003e\u003cspan class=\"badge\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpolyline points=\"22 7 13.5 15.5 8.5 10.5 2 17\"\u003e\u003c\/polyline\u003e\u003cpolyline points=\"16 7 22 7 22 13\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e Free\u003c\/span\u003e\u003cspan class=\"badge\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpath d=\"M6.3 20.3a2.4 2.4 0 0 0 3.4 0L12 18l-6-6-2.3 2.3a2.4 2.4 0 0 0 0 3.4Z\"\u003e\u003c\/path\u003e\u003cpath d=\"m2 22 3-3\"\u003e\u003c\/path\u003e\u003cpath d=\"M7.5 13.5 10 11\"\u003e\u003c\/path\u003e\u003cpath d=\"M10.5 16.5 13 14\"\u003e\u003c\/path\u003e\u003cpath d=\"m18 3-4 4h6l-4 4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e API available\u003c\/span\u003e\u003cspan class=\"badge brand\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003cpath d=\"m9 12 2 2 4-4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Verified by Guidaio\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbd-row\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"label\"\u003eCategories\u003c\/div\u003e\n\u003cdiv class=\"chip-row\"\u003e\n\u003ca class=\"chip cat\" href=\"\/collections\/translation-language\"\u003eTranslation Language\u003c\/a\u003e\u003ca class=\"chip cat\" href=\"\/collections\/localization-internationalization\"\u003eLocalization Internationalization\u003c\/a\u003e\u003ca class=\"chip cat\" href=\"\/collections\/data-cleaning\"\u003eData Cleaning\u003c\/a\u003e\u003ca class=\"chip cat\" href=\"\/collections\/data-labeling\"\u003eData Labeling\u003c\/a\u003e\u003ca class=\"chip cat\" href=\"\/collections\/data-governance-quality\"\u003eData Governance Quality\u003c\/a\u003e\u003ca class=\"chip cat\" href=\"\/collections\/academic-research\"\u003eAcademic Research\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"label\"\u003eTarget domains\u003c\/div\u003e\n\u003cdiv class=\"chip-row\"\u003e\n\u003ca class=\"chip dom\" href=\"\/collections\/linguistic-research\"\u003eLinguistic Research\u003c\/a\u003e\u003ca class=\"chip dom\" href=\"\/collections\/translation-services\"\u003eTranslation Services\u003c\/a\u003e\u003ca class=\"chip dom\" href=\"\/collections\/data-ai\"\u003eData Ai\u003c\/a\u003e\u003ca class=\"chip dom\" href=\"\/collections\/science-r-d\"\u003eScience R D\u003c\/a\u003e\u003ca class=\"chip dom\" href=\"\/collections\/education-academia\"\u003eEducation Academia\u003c\/a\u003e\u003ca class=\"chip dom\" href=\"\/collections\/it-software\"\u003eIt Software\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cta-row\"\u003e\u003ca class=\"btn btn-primary\" href=\"https:\/\/pypi.org\/project\/fastspell\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"16\" height=\"16\"\u003e\u003cpath d=\"M15 3h6v6\"\u003e\u003c\/path\u003e\u003cpath d=\"M10 14 21 3\"\u003e\u003c\/path\u003e\u003cpath d=\"M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Visit the project page\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003caside class=\"snapshot\"\u003e\u003ch3\u003eSnapshot\u003c\/h3\u003e\n\u003cdl\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdt\u003ePricing model\u003c\/dt\u003e\n\u003cdd\u003eFree\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdt\u003eFree plan\u003c\/dt\u003e\n\u003cdd\u003eYes\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdt\u003eAPI available\u003c\/dt\u003e\n\u003cdd\u003eYes\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdt\u003eDeployment\u003c\/dt\u003e\n\u003cdd\u003eAPI\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdt\u003eLanguages\u003c\/dt\u003e\n\u003cdd\u003eAf · Am · Ast · Awa · +64\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdt\u003eTool status\u003c\/dt\u003e\n\u003cdd\u003eActive\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdt\u003eCountry of origin\u003c\/dt\u003e\n\u003cdd\u003e🇪🇸 Spain\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\u003c\/aside\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cnav class=\"toc\" aria-label=\"Page sections\"\u003e\u003ca href=\"#what\"\u003eWhat is it\u003c\/a\u003e\u003ca href=\"#bestnot\"\u003eWhen to use FastSpell \/ When not to\u003c\/a\u003e\u003ca href=\"#how\"\u003eHow to use\u003c\/a\u003e\u003ca href=\"#proscons\"\u003ePros \u0026amp; Cons\u003c\/a\u003e\u003ca href=\"#pricing\"\u003ePricing\u003c\/a\u003e\u003ca href=\"#trust\"\u003eTrust \u0026amp; Privacy\u003c\/a\u003e\u003ca href=\"#watch\"\u003eWatch-outs\u003c\/a\u003e\u003ca href=\"#setup\"\u003eSetup \u0026amp; Integrations\u003c\/a\u003e\u003ca href=\"#company\"\u003eCompany\u003c\/a\u003e\u003ca href=\"#resources\"\u003eResources\u003c\/a\u003e\u003ca href=\"#alternatives\"\u003eAlternatives\u003c\/a\u003e\u003ca href=\"#faq\"\u003eFAQ\u003c\/a\u003e\u003ca href=\"#conclusion\"\u003eConclusion\u003c\/a\u003e\u003c\/nav\u003e\n\u003csection class=\"block\" id=\"what\"\u003e\u003cdiv class=\"head\"\u003e\n\u003cspan class=\"eyebrow\"\u003eOverview\u003c\/span\u003e\u003ch2\u003eWhat is FastSpell?\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid-2\"\u003e\n\u003cdiv class=\"rich justify\"\u003e\u003cp\u003e\u003cb\u003eFastSpell\u003c\/b\u003e is a targeted language identifier: a Python library whose job is not to guess any language on earth, but to decide reliably whether a piece of text really is in the one language you care about. Its repository sums it up in a single line, \u003ci\u003eTargetted language identifier, based on FastText and Hunspell.\u003c\/i\u003e The problem it addresses is familiar to anyone who has assembled a multilingual corpus. Generic identifiers cope badly with languages that share vocabulary and orthography, and they routinely label Galician as Spanish, Catalan as Spanish, or Bosnian as Croatian. FastSpell answers this with a two-stage mechanism. First \u003cb\u003efastText\u003c\/b\u003e proposes a language; if that proposal is very close to the target language, a second stage takes over and \u003cb\u003eHunspell\u003c\/b\u003e arbitrates by comparing spelling error rates across the candidate dictionaries. The README's own example is fastText returning Spanish while the target language is Galician, which is exactly the case the extra check exists to settle. The candidate sets are declarative rather than hard-coded: similar.yaml lists 68 target languages with the languages each can be confused with (gl with es and pt, ca with es and oc, cs with sk, da with nb and sv, is with da, nb, nn and sv, bs with hr, sr_lat and sl), while hunspell.yaml maps 92 dictionary entries. Two modes govern the verdict. \u003ci\u003eAggressive\u003c\/i\u003e always commits to an answer; \u003ci\u003econservative\u003c\/i\u003e returns the label unk when the evidence is tied, which matters when a wrong label costs more than a missing one. There are two ways in. As a module, from fastspell import FastSpell, then fsobj.getlang('Hola, mundo') returns es. As a command, fastspell with --aggr or --cons, a target language, an input and an output. Configuration is overridable with -c\/--config or the FASTSPELL_CONFIG environment variable. FastSpell is free software under GPL-3.0, installed with pip install fastspell or conda install -c conda-forge -c bitextor fastspell, and developed in the open on GitHub, where the repository shows 38 stars, 5 forks and 14 releases, the latest being v0.13.1. It grew out of the corpus-cleaning work of its publisher, Prompsit Language Engineering, S.L., with declared links to ParaCrawl, MaCoCu and HPLT, and it was presented at LREC-COLING 2024 in the paper \u003ci\u003eFastSpell: The LangId Magic Spell\u003c\/i\u003e by Marta Bañón, Gema Ramírez-Sánchez, Jaume Zaragoza-Bernabeu and Sergio Ortiz Rojas.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3 style=\"font-size:14px;margin-bottom:12px;color:var(--gv3-brand-ink);text-transform:uppercase;letter-spacing:.08em\"\u003eWhat it does\u003c\/h3\u003e\n\u003cul class=\"brand-list\"\u003e\n\u003cli\u003eIdentify the language of a text among closely related languages\u003c\/li\u003e\n\u003cli\u003eTell Galician from Spanish and Portuguese, Catalan from Spanish, or Bosnian from Croatian and Serbian\u003c\/li\u003e\n\u003cli\u003eFilter a multilingual corpus before training, alignment or annotation\u003c\/li\u003e\n\u003cli\u003eChoose between an aggressive and a conservative verdict depending on your tolerance for false positives\u003c\/li\u003e\n\u003cli\u003eLabel files in batch from the command line, or call getlang() directly from Python\u003c\/li\u003e\n\u003cli\u003eOverride the language configuration to add or remove a target language without touching the code\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection class=\"block soft\" id=\"bestnot\"\u003e\u003cdiv class=\"head\"\u003e\n\u003cspan class=\"eyebrow\"\u003eAudience\u003c\/span\u003e\u003ch2\u003eWhen to use FastSpell \/ When not to\u003c\/h2\u003e\n\u003cp class=\"lead\"\u003eA quick filter to help you decide if FastSpell is the right fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bestnot\"\u003e\n\u003cdiv class=\"card for\"\u003e\n\u003ch3\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"16\" height=\"16\"\u003e\u003cpath d=\"M7 10v12\"\u003e\u003c\/path\u003e\u003cpath d=\"M15 5.88 14 10h5.83a2 2 0 0 1 1.92 2.56l-2.33 8A2 2 0 0 1 17.5 22H4a2 2 0 0 1-2-2v-8a2 2 0 0 1 2-2h2.76a2 2 0 0 0 1.79-1.11L12 2a3.13 3.13 0 0 1 3 3.88Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e When to use FastSpell\u003c\/h3\u003e\n\u003cul class=\"brand-list\"\u003e\n\u003cli\u003eCorpus engineers cleaning and filtering large multilingual datasets, as in the ParaCrawl, MaCoCu and HPLT pipelines\u003c\/li\u003e\n\u003cli\u003eNLP teams whose processing chains break when a general-purpose identifier confuses two closely related languages\u003c\/li\u003e\n\u003cli\u003ePractitioners working on lower-resourced languages and regional varieties such as Galician, Catalan, Asturian, Occitan, Sardinian or Venetian\u003c\/li\u003e\n\u003cli\u003eAcademic groups in computational linguistics who need a citable, peer-reviewed method (LREC-COLING 2024)\u003c\/li\u003e\n\u003cli\u003eOrganizations that must keep text offline or on-premises, since everything runs locally once installed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card not\"\u003e\n\u003ch3\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"16\" height=\"16\"\u003e\u003cpath d=\"M17 14V2\"\u003e\u003c\/path\u003e\u003cpath d=\"M9 18.12 10 14H4.17a2 2 0 0 1-1.92-2.56l2.33-8A2 2 0 0 1 6.5 2H20a2 2 0 0 1 2 2v8a2 2 0 0 1-2 2h-2.76a2 2 0 0 0-1.79 1.11L12 22a3.13 3.13 0 0 1-3-3.88Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e When not to use FastSpell\u003c\/h3\u003e\n\u003cul class=\"brand-list\"\u003e\n\u003cli\u003eAnyone expecting a graphical interface: FastSpell offers a Python module and a command line, nothing else\u003c\/li\u003e\n\u003cli\u003eTeams that want a hosted service or a REST endpoint to call remotely, because there is nothing to call over the network\u003c\/li\u003e\n\u003cli\u003eWindows and macOS users expecting supported builds: the package classifiers declare POSIX\/Linux only\u003c\/li\u003e\n\u003cli\u003eUsers looking for a spell checker or a proofreading assistant, since Hunspell is used here purely to arbitrate between candidate languages\u003c\/li\u003e\n\u003cli\u003eNon-technical profiles unwilling to handle system dependencies, as the install may require python3-dev, build-essential, autoconf, autopoint and libtool\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection class=\"block soft\" id=\"how\"\u003e\u003cdiv class=\"head\"\u003e\n\u003cspan class=\"eyebrow\"\u003eGet started\u003c\/span\u003e\u003ch2\u003eHow to use FastSpell\u003c\/h2\u003e\n\u003cp class=\"lead\"\u003eA typical end-to-end flow, from setup to results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003col class=\"steps\"\u003e\n\u003cli\u003eCheck the prerequisites: a suitable Python interpreter and the system package python3-dev (sudo apt-get install python3-dev)\u003c\/li\u003e\n\u003cli\u003eInstall the library with pip install fastspell, with conda install -c conda-forge -c bitextor fastspell, or with pip install . from a clone of the sources\u003c\/li\u003e\n\u003cli\u003eIf cyhunspell 2.0.2 fails to build, a case reported on Python 3.10, install build-essential, autoconf, autopoint and libtool, then install cyhunspell==2.0.3 from git before retrying\u003c\/li\u003e\n\u003cli\u003eOptionally run fastspell-download to fetch the fastText model; since version 0.7 the Hunspell dictionaries come with the pip package\u003c\/li\u003e\n\u003cli\u003eFrom Python: from fastspell import FastSpell, then fsobj = FastSpell.FastSpell('en', mode='cons') and fsobj.getlang('Hello, world'), which returns en\u003c\/li\u003e\n\u003cli\u003eFrom the shell: fastspell [--aggr|--cons] [--hbs] [-q|--debug] [--logfile F] lang [input] [output]\u003c\/li\u003e\n\u003cli\u003ePick the mode deliberately: --aggr always commits to a language, --cons returns unk when the check is inconclusive\u003c\/li\u003e\n\u003cli\u003eProfile a whole corpus in one line: cat inputtext | fastspell --aggr $L | cut -f2 | sort | uniq -c | sort -nr\u003c\/li\u003e\n\u003cli\u003eCustomize the behavior by copying config\/similar.yaml and config\/hunspell.yaml, then pointing -c\/--config or FASTSPELL_CONFIG at your own versions\u003c\/li\u003e\n\u003cli\u003eValidate the installation from the tests directory with python3 -m unittest discover; dictionaries are looked up in ~\/.local\/share\/fastspell, ~\/.local\/share\/hunspell, $VIRTUAL_ENV\/share\/hunspell and \/usr\/share\/hunspell\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"block\" id=\"proscons\"\u003e\u003cdiv class=\"head\"\u003e\n\u003cspan class=\"eyebrow\"\u003eQuick read\u003c\/span\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid-2\"\u003e\n\u003cdiv class=\"pc pros\"\u003e\n\u003ch3\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003cpath d=\"m9 12 2 2 4-4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Pros\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cspan\u003eSolves a precise, well-documented problem, the confusion between closely related languages, exactly where general-purpose identifiers fail\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cspan\u003ePeer-reviewed method presented at LREC-COLING 2024, so the approach can be cited and scrutinized rather than taken on trust\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cspan\u003eFirst-party benchmark comparing it against nine other identifiers, with test data drawn from ParaCrawl human evaluations\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cspan\u003eFree software under GPL-3.0: no usage cost, and source code that can be audited line by line\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cspan\u003eRuns entirely locally, so no text ever leaves the machine, which suits confidential or regulated corpora\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cspan\u003eUnusually broad coverage of lower-resourced languages and regional varieties\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cspan\u003eOpen configuration and two explicit modes, letting you trade precision against recall without touching the code\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pc cons\"\u003e\n\u003ch3\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"16\" height=\"16\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003cline x1=\"4.93\" y1=\"4.93\" x2=\"19.07\" y2=\"19.07\"\u003e\u003c\/line\u003e\u003c\/svg\u003e Cons\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"\u003e\u003c\/line\u003e\u003cline x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"\u003e\u003c\/line\u003e\u003c\/svg\u003e \u003cspan\u003eInstallation can be fragile: the README devotes a whole section to cyhunspell build failures and to system dependencies that must be installed by hand\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"\u003e\u003c\/line\u003e\u003cline x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"\u003e\u003c\/line\u003e\u003c\/svg\u003e \u003cspan\u003eThe project contradicts itself on the Python requirement, the README announcing Python3.8 or higher while pyproject.toml declares requires-python = \"\u0026gt;=3.10\"; both statements are first-party and neither is retracted\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"\u003e\u003c\/line\u003e\u003cline x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"\u003e\u003c\/line\u003e\u003c\/svg\u003e \u003cspan\u003ePackage classifiers declare POSIX\/Linux only, so neither Windows nor macOS is announced as a supported platform\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"\u003e\u003c\/line\u003e\u003cline x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"\u003e\u003c\/line\u003e\u003c\/svg\u003e \u003cspan\u003eNo documentation beyond the README: no dedicated site, no generated API reference, no tutorials\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"\u003e\u003c\/line\u003e\u003cline x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"\u003e\u003c\/line\u003e\u003c\/svg\u003e \u003cspan\u003eSmall project by any measure: 38 stars, 2 watchers, 6 contributors and 5 open issues\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"\u003e\u003c\/line\u003e\u003cline x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"\u003e\u003c\/line\u003e\u003c\/svg\u003e \u003cspan\u003eSlow publication rhythm, with release v0.13.1 dated 13\/02\/2025 and the last push dated 04\/09\/2025\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"\u003e\u003c\/line\u003e\u003cline x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"\u003e\u003c\/line\u003e\u003c\/svg\u003e \u003cspan\u003eNo graphical interface and no hosted service; benchmark results also live in an external Google spreadsheet that is not versioned with the code\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection class=\"block soft\" id=\"pricing\"\u003e\u003cdiv class=\"head\"\u003e\n\u003cspan class=\"eyebrow\"\u003ePricing\u003c\/span\u003e\u003ch2\u003ePricing \u0026amp; Plans\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cp class=\"rich justify\" style=\"color:var(--gv3-ink-2);margin:0 0 18px;max-width:80ch\"\u003eFastSpell is free software released under the GPL-3.0 license. There is no paid tier, no subscription and no price point to report, because the tool is not sold: installation from PyPI or conda-forge costs nothing, and no pricing page exists for it. That absence follows from the licensing model, not from a gap in the research. The only real cost of adoption is the technical effort of installing and running it on hardware you already own. For the avoidance of doubt, the publisher separately markets a commercial translation API on subscription; that is a different product, and none of its pricing applies to FastSpell.\u003c\/p\u003e\n\u003cdiv class=\"pricing-extras\"\u003e\u003cdiv class=\"affiliate-note\"\u003ePrices and plans listed above may evolve. Always check the official pricing page before subscribing.\u003c\/div\u003e\u003c\/div\u003e\u003c\/section\u003e\n\u003csection class=\"block\" id=\"trust\"\u003e\u003cdiv class=\"head\"\u003e\n\u003cspan class=\"eyebrow\"\u003eTrust \u0026amp; Privacy\u003c\/span\u003e\u003ch2\u003eData, GDPR \u0026amp; hosting\u003c\/h2\u003e\n\u003cp class=\"lead\"\u003eA consolidated view of how FastSpell handles your data.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust-grid\"\u003e\n\u003cdiv class=\"col\"\u003e\n\u003cdiv class=\"trust-card\"\u003e\n\u003ch3\u003eGDPR overview\u003c\/h3\u003e\n\u003cp class=\"justify\" style=\"color:var(--gv3-ink-2);margin:0\"\u003eNo GDPR claim is made for FastSpell anywhere. The library runs on your own machine and transmits nothing, so it performs no remote processing of personal data on your behalf, and there is no privacy notice attached to the package. The GDPR material that does exist belongs to the publisher's website. That privacy policy, last updated on 16 September 2025, names \u003cb\u003ePrompsit Language Engineering, S.L.\u003c\/b\u003e (CIF B54085782), Avinguda Universitat, s\/n. Edifici Quorum III. 03202 Elx (Alacant), Spain, as controller. It sets out rights of access, rectification, erasure, objection, restriction and portability, and the right to complain to the Spanish supervisory authority, the AEPD. International transfers are limited to Google LLC in the United States under the EU-US Data Privacy Framework, and only where analytics are accepted. The publisher is established in the European Union, so no Article 27 representative applies. Read that document as covering prompsit.com, not the library.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust-card\"\u003e\n\u003ch3\u003eWho owns the data?\u003c\/h3\u003e\n\u003cp class=\"justify\" style=\"color:var(--gv3-ink-2);margin:0 0 12px\"\u003eFastSpell is a library you install and run on your own machine, so the text you analyze never leaves it. Neither the repository, the package nor the GPL-3.0 license claims any ownership over the content you process: what you feed in and what you get back remain entirely yours, and there is no account, sign-up or authentication that could tie your material to a provider. The only privacy document the publisher publishes states its own perimeter in the first line, \u003ci\u003eScope: Website https:\/\/prompsit.com\u003c\/i\u003e, so it governs the website of Prompsit Language Engineering, S.L., not this library. No third party receives the analyzed text.\u003c\/p\u003e\n\u003ch3\u003eReuse rights\u003c\/h3\u003e\n\u003cp class=\"justify\" style=\"color:var(--gv3-ink-2);margin:0\"\u003eBecause everything happens locally, there is no data reuse policy to negotiate: the text you submit is processed on your own machine and is never transmitted, stored or shared. You may reuse both the input and the labeled output freely, without asking anyone's permission, subject only to whatever rights you already hold over the text itself. The single documented network flow is the download of the fastText model and the Hunspell dictionaries through the fastspell-download command, and since version 0.7 the dictionaries ship with the pip package anyway. The publisher's privacy policy applies only to prompsit.com, where it describes Google analytics collected on consent and a Nodemailer contact form whose messages are not stored in a database; it says nothing about material processed with the library. Note the distinction that matters legally: GPL-3.0 sets conditions on redistributing the software, not on the texts you analyze with it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust-card\"\u003e\n\u003ch3\u003eData retention \u0026amp; training\u003c\/h3\u003e\n\u003cdiv class=\"kv\"\u003e\n\u003cdiv class=\"k\"\u003eRetention summary\u003c\/div\u003e\n\u003cdiv class=\"v justify\"\u003eFastSpell itself retains nothing. The library runs on your machine, transmits no text and keeps no copy beyond whatever your own scripts choose to write to disk, so no retention period applies to the material you analyze, and deletion or anonymization stays entirely under your control because the data never leaves your environment. The only retention rules published by Prompsit Language Engineering, S.L. belong to its own website: analytics data persists for the lifetime of the corresponding cookies and only where analytics are accepted, while messages sent through the contact form are kept for as long as it takes to handle the request and are not stored in a database. Those rules govern the publisher's website, not the library, and none of them concerns text processed with FastSpell.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kv\"\u003e\n\u003cdiv class=\"k\"\u003eGDPR contact\u003c\/div\u003e\n\u003cdiv class=\"v\"\u003e\u003ca href=\"mailto:info@prompsit.com\"\u003einfo@prompsit.com\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"col\"\u003e\u003cdiv class=\"trust-card\"\u003e\n\u003ch3\u003eHosting summary\u003c\/h3\u003e\n\u003cp class=\"justify\" style=\"color:var(--gv3-ink-2);margin:0 0 14px\"\u003eThere is no hosting to describe, and that is a property of the product rather than a gap in the research. FastSpell is a library you install on your own machine or server: it runs inside your process, on your hardware, under your jurisdiction. No hosting country and no hosting region is declared because none applies. There is no backend, no account and no storage operated by the publisher, and the text you analyze is never uploaded. The only network traffic the project documents is outbound and occasional, namely downloading the fastText model and the Hunspell dictionaries, which since version 0.7 arrive with the pip package in any case. In practice the hosting question is therefore yours to answer: whichever machine you run FastSpell on determines where the processing happens and which law applies to it. The publisher, Prompsit Language Engineering, S.L., is established in Elx (Alacant), Spain, but that is where the company sits, not where your data goes; its published privacy policy covers only its own website.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection class=\"block watch\" id=\"watch\"\u003e\u003cdiv class=\"head\"\u003e\n\u003cspan class=\"eyebrow\"\u003eWatch-outs\u003c\/span\u003e\u003ch2\u003eThings to keep in mind\u003c\/h2\u003e\n\u003cp class=\"lead\"\u003eRisks and trade-offs to weigh before adopting FastSpell.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cul class=\"brand-list\" style=\"grid-template-columns:repeat(2,1fr);display:grid;gap:12px 24px\"\u003e\n\u003cli\u003eThe project contradicts itself on the Python requirement: the README says Python3.8 or higher, pyproject.toml declares \u0026gt;=3.10. Both are first-party, and betting on the wrong one wastes an install cycle\u003c\/li\u003e\n\u003cli\u003ecyhunspell 2.0.2 is known to break the build in some cases; the documented workaround means installing compilers and autotools on the target machine, which is not always permitted in locked-down environments\u003c\/li\u003e\n\u003cli\u003ePackage classifiers declare POSIX\/Linux only, so Windows and macOS users sit outside the announced support perimeter and are on their own if something breaks\u003c\/li\u003e\n\u003cli\u003eThe publisher's privacy policy scopes itself explicitly to its own website and does not cover the library; do not read it as a guarantee about the text you process locally\u003c\/li\u003e\n\u003cli\u003eThe PyPI page of the package is currently unreachable to automated clients, because pypi.org serves a JavaScript verification challenge in its place; treat the GitHub repository as the authoritative source\u003c\/li\u003e\n\u003cli\u003eThe published benchmark results live in an external Google spreadsheet that is not versioned with the code, so they can change or vanish without leaving a trace in the repository\u003c\/li\u003e\n\u003cli\u003eAutomated language labels invite over-trust: a conservative unk is information rather than a failure, and accepting any identifier's output as ground truth without sampling and human review will silently degrade a corpus\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\n\u003csection class=\"block\" id=\"setup\"\u003e\u003cdiv class=\"head\"\u003e\n\u003cspan class=\"eyebrow\"\u003eSetup\u003c\/span\u003e\u003ch2\u003eSetup \u0026amp; Integrations\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"setup-grid\"\u003e\n\u003cdiv class=\"setup-card\"\u003e\n\u003ch3 style=\"font-size:15px;margin-bottom:10px\"\u003eTechnical difficulty\u003c\/h3\u003e\n\u003cp class=\"justify\" style=\"color:var(--gv3-ink-2);margin:0 0 14px\"\u003eModerate, and squarely aimed at a technical audience. In the nominal case it is one command, pip install fastspell, but real system prerequisites exist: python3-dev, and sometimes build-essential, autoconf, autopoint and libtool when cyhunspell has to be compiled. A documented failure on cyhunspell 2.0.2 requires a manual detour through git. Since version 0.7 the dictionaries are installed automatically by pip, which removes one step. Expect to be comfortable with Python, a Linux terminal and package managers. The bundled unit tests let you confirm the installation before trusting any result.\u003c\/p\u003e\n\u003ch3 style=\"font-size:15px;margin:14px 0 10px\"\u003eDeployment\u003c\/h3\u003e\n\u003cdiv class=\"flag-row\"\u003e\u003cspan class=\"flag\"\u003eAPI\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"setup-card\"\u003e\n\u003ch3 style=\"font-size:15px;margin-bottom:10px\"\u003eIntegrations\u003c\/h3\u003e\n\u003cdiv class=\"integrations\"\u003e\n\u003cspan class=\"integration\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpath d=\"M6.3 20.3a2.4 2.4 0 0 0 3.4 0L12 18l-6-6-2.3 2.3a2.4 2.4 0 0 0 0 3.4Z\"\u003e\u003c\/path\u003e\u003cpath d=\"m2 22 3-3\"\u003e\u003c\/path\u003e\u003cpath d=\"M7.5 13.5 10 11\"\u003e\u003c\/path\u003e\u003cpath d=\"M10.5 16.5 13 14\"\u003e\u003c\/path\u003e\u003cpath d=\"m18 3-4 4h6l-4 4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e FastText\u003c\/span\u003e\u003cspan class=\"integration\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpath d=\"M6.3 20.3a2.4 2.4 0 0 0 3.4 0L12 18l-6-6-2.3 2.3a2.4 2.4 0 0 0 0 3.4Z\"\u003e\u003c\/path\u003e\u003cpath d=\"m2 22 3-3\"\u003e\u003c\/path\u003e\u003cpath d=\"M7.5 13.5 10 11\"\u003e\u003c\/path\u003e\u003cpath d=\"M10.5 16.5 13 14\"\u003e\u003c\/path\u003e\u003cpath d=\"m18 3-4 4h6l-4 4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Hunspell\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:15px;margin:14px 0 10px\"\u003eSupported languages\u003c\/h3\u003e\n\u003cdiv class=\"flag-row\"\u003e\n\u003cspan class=\"flag\"\u003eAf\u003c\/span\u003e\u003cspan class=\"flag\"\u003eAm\u003c\/span\u003e\u003cspan class=\"flag\"\u003eAst\u003c\/span\u003e\u003cspan class=\"flag\"\u003eAwa\u003c\/span\u003e\u003cspan class=\"flag\"\u003eAz\u003c\/span\u003e\u003cspan class=\"flag\"\u003eBe\u003c\/span\u003e\u003cspan class=\"flag\"\u003eBg\u003c\/span\u003e\u003cspan class=\"flag\"\u003eBho\u003c\/span\u003e\u003cspan class=\"flag\"\u003eBs\u003c\/span\u003e\u003cspan class=\"flag\"\u003eCa\u003c\/span\u003e\u003cspan class=\"flag\"\u003eCs\u003c\/span\u003e\u003cspan class=\"flag\"\u003eCy\u003c\/span\u003e\u003cspan class=\"flag\"\u003eDa\u003c\/span\u003e\u003cspan class=\"flag\"\u003eEs\u003c\/span\u003e\u003cspan class=\"flag\"\u003eFa\u003c\/span\u003e\u003cspan class=\"flag\"\u003eFo\u003c\/span\u003e\u003cspan class=\"flag\"\u003eFur\u003c\/span\u003e\u003cspan class=\"flag\"\u003eGa\u003c\/span\u003e\u003cspan class=\"flag\"\u003eGl\u003c\/span\u003e\u003cspan class=\"flag\"\u003eGn\u003c\/span\u003e\u003cspan class=\"flag\"\u003eHbs_cyr\u003c\/span\u003e\u003cspan class=\"flag\"\u003eHbs_lat\u003c\/span\u003e\u003cspan class=\"flag\"\u003eHi\u003c\/span\u003e\u003cspan class=\"flag\"\u003eHr\u003c\/span\u003e\u003cspan class=\"flag\"\u003eHt\u003c\/span\u003e\u003cspan class=\"flag\"\u003eId\u003c\/span\u003e\u003cspan class=\"flag\"\u003eIs\u003c\/span\u003e\u003cspan class=\"flag\"\u003eIw\u003c\/span\u003e\u003cspan class=\"flag\"\u003eKk\u003c\/span\u003e\u003cspan class=\"flag\"\u003eKy\u003c\/span\u003e\u003cspan class=\"flag\"\u003eLb\u003c\/span\u003e\u003cspan class=\"flag\"\u003eLtg\u003c\/span\u003e\u003cspan class=\"flag\"\u003eLv\u003c\/span\u003e\u003cspan class=\"flag\"\u003eMag\u003c\/span\u003e\u003cspan class=\"flag\"\u003eMai\u003c\/span\u003e\u003cspan class=\"flag\"\u003eMe_cyr\u003c\/span\u003e\u003cspan class=\"flag\"\u003eMe_lat\u003c\/span\u003e\u003cspan class=\"flag\"\u003eMk\u003c\/span\u003e\u003cspan class=\"flag\"\u003eMn\u003c\/span\u003e\u003cspan class=\"flag\"\u003eMr\u003c\/span\u003e\u003cspan class=\"flag\"\u003eMs\u003c\/span\u003e\u003cspan class=\"flag\"\u003eNb\u003c\/span\u003e\u003cspan class=\"flag\"\u003eNe\u003c\/span\u003e\u003cspan class=\"flag\"\u003eNl\u003c\/span\u003e\u003cspan class=\"flag\"\u003eNn\u003c\/span\u003e\u003cspan class=\"flag\"\u003eOc\u003c\/span\u003e\u003cspan class=\"flag\"\u003ePap\u003c\/span\u003e\u003cspan class=\"flag\"\u003ePt\u003c\/span\u003e\u003cspan class=\"flag\"\u003eQu\u003c\/span\u003e\u003cspan class=\"flag\"\u003eRu\u003c\/span\u003e\u003cspan class=\"flag\"\u003eSc\u003c\/span\u003e\u003cspan class=\"flag\"\u003eSk\u003c\/span\u003e\u003cspan class=\"flag\"\u003eSl\u003c\/span\u003e\u003cspan class=\"flag\"\u003eSo\u003c\/span\u003e\u003cspan class=\"flag\"\u003eSr_cyr\u003c\/span\u003e\u003cspan class=\"flag\"\u003eSr_lat\u003c\/span\u003e\u003cspan class=\"flag\"\u003eSv\u003c\/span\u003e\u003cspan class=\"flag\"\u003eSzl\u003c\/span\u003e\u003cspan class=\"flag\"\u003eTg\u003c\/span\u003e\u003cspan class=\"flag\"\u003eTi\u003c\/span\u003e\u003cspan class=\"flag\"\u003eTk\u003c\/span\u003e\u003cspan class=\"flag\"\u003eTt\u003c\/span\u003e\u003cspan class=\"flag\"\u003eUk\u003c\/span\u003e\u003cspan class=\"flag\"\u003eUr\u003c\/span\u003e\u003cspan class=\"flag\"\u003eUz\u003c\/span\u003e\u003cspan class=\"flag\"\u003eVec\u003c\/span\u003e\u003cspan class=\"flag\"\u003eYi\u003c\/span\u003e\u003cspan class=\"flag\"\u003eZsm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection class=\"block soft\" id=\"company\"\u003e\u003cdiv class=\"head\"\u003e\n\u003cspan class=\"eyebrow\"\u003eCompany\u003c\/span\u003e\u003ch2\u003eBehind FastSpell\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"company-grid\"\u003e\n\u003cdiv class=\"company-card\"\u003e\n\u003cdiv class=\"kv\"\u003e\n\u003cdiv class=\"k\"\u003eCompany name\u003c\/div\u003e\n\u003cdiv class=\"v\"\u003e\u003cb\u003ePrompsit Language Engineering, S.L.\u003c\/b\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kv\"\u003e\n\u003cdiv class=\"k\"\u003eFounded\u003c\/div\u003e\n\u003cdiv class=\"v\"\u003eINFORMATION_NOT_FOUND\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kv\"\u003e\n\u003cdiv class=\"k\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"v\"\u003e🇪🇸 Spain\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kv\"\u003e\n\u003cdiv class=\"k\"\u003eHeadquarters\u003c\/div\u003e\n\u003cdiv class=\"v\"\u003eAvinguda Universitat, s\/n. Edifici Quorum III. 03202 Elx (Alacant), Spain\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kv\"\u003e\n\u003cdiv class=\"k\"\u003eUBO\u003c\/div\u003e\n\u003cdiv class=\"v\"\u003eINFORMATION_NOT_FOUND\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kv\"\u003e\n\u003cdiv class=\"k\"\u003eUBO country\u003c\/div\u003e\n\u003cdiv class=\"v\"\u003eINFORMATION_NOT_FOUND\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kv\"\u003e\n\u003cdiv class=\"k\"\u003eDomain registrar country\u003c\/div\u003e\n\u003cdiv class=\"v\"\u003e🇫🇷 France\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kv\"\u003e\n\u003cdiv class=\"k\"\u003eLegal contact\u003c\/div\u003e\n\u003cdiv class=\"v\"\u003e\u003ca href=\"mailto:info@prompsit.com\"\u003einfo@prompsit.com\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:grid;gap:14px\"\u003e\u003cdiv class=\"company-card\"\u003e\n\u003ch3 style=\"font-size:15px;margin-bottom:10px\"\u003eSocial\u003c\/h3\u003e\n\u003cdiv class=\"social-row\"\u003e\u003ca class=\"social\" href=\"https:\/\/www.linkedin.com\/company\/prompsit-language-engineering\" target=\"_blank\" rel=\"noopener\" aria-label=\"LinkedIn\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"18\" height=\"18\"\u003e\u003cpath d=\"M16 8a6 6 0 0 1 6 6v7h-4v-7a2 2 0 0 0-4 0v7h-4v-7a6 6 0 0 1 6-6z\"\u003e\u003c\/path\u003e\u003crect x=\"2\" y=\"9\" width=\"4\" height=\"12\"\u003e\u003c\/rect\u003e\u003ccircle cx=\"4\" cy=\"4\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection class=\"block\" id=\"resources\"\u003e\u003cdiv class=\"head\"\u003e\n\u003cspan class=\"eyebrow\"\u003eOfficial links\u003c\/span\u003e\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cp class=\"lead\"\u003eAll the official URLs gathered for verification and reference.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"res-grid\"\u003e\n\u003ca class=\"res\" href=\"https:\/\/pypi.org\/project\/fastspell\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003cpath d=\"M12 2a14.5 14.5 0 0 0 0 20 14.5 14.5 0 0 0 0-20\"\u003e\u003c\/path\u003e\u003cpath d=\"M2 12h20\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cdiv class=\"res-text\"\u003e\n\u003cdiv\u003eHomepage\u003c\/div\u003e\n\u003cdiv class=\"url\"\u003epypi.org\/project\/fastspell\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/a\u003e\u003ca class=\"res\" href=\"https:\/\/github.com\/mbanon\/fastspell\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpolygon points=\"12 2 2 7 12 12 22 7 12 2\"\u003e\u003c\/polygon\u003e\u003cpolyline points=\"2 17 12 22 22 17\"\u003e\u003c\/polyline\u003e\u003cpolyline points=\"2 12 12 17 22 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003cdiv class=\"res-text\"\u003e\n\u003cdiv\u003eFeatures\u003c\/div\u003e\n\u003cdiv class=\"url\"\u003egithub.com\/mbanon\/fastspell\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/a\u003e\u003ca class=\"res\" href=\"https:\/\/prompsit.com\/en\/about\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003cline x1=\"12\" y1=\"16\" x2=\"12\" y2=\"12\"\u003e\u003c\/line\u003e\u003cline x1=\"12\" y1=\"8\" x2=\"12.01\" y2=\"8\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003cdiv class=\"res-text\"\u003e\n\u003cdiv\u003eAbout\u003c\/div\u003e\n\u003cdiv class=\"url\"\u003eprompsit.com\/en\/about\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/a\u003e\u003ca class=\"res\" href=\"https:\/\/prompsit.com\/en\/contact\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003crect x=\"2\" y=\"4\" width=\"20\" height=\"16\" rx=\"2\"\u003e\u003c\/rect\u003e\u003cpath d=\"m22 7-10 5L2 7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cdiv class=\"res-text\"\u003e\n\u003cdiv\u003eContact\u003c\/div\u003e\n\u003cdiv class=\"url\"\u003eprompsit.com\/en\/contact\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/a\u003e\u003ca class=\"res\" href=\"https:\/\/github.com\/mbanon\/fastspell\/blob\/main\/LICENSE\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003cline x1=\"16\" y1=\"13\" x2=\"8\" y2=\"13\"\u003e\u003c\/line\u003e\u003cline x1=\"16\" y1=\"17\" x2=\"8\" y2=\"17\"\u003e\u003c\/line\u003e\u003cpolyline points=\"10 9 9 9 8 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003cdiv class=\"res-text\"\u003e\n\u003cdiv\u003eTerms\u003c\/div\u003e\n\u003cdiv class=\"url\"\u003egithub.com\/mbanon\/fastspell\/blob\/main\/LICENSE\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/a\u003e\u003ca class=\"res\" href=\"https:\/\/github.com\/mbanon\/fastspell#usage\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cpath d=\"M2 3h6a4 4 0 0 1 4 4v14a3 3 0 0 0-3-3H2z\"\u003e\u003c\/path\u003e\u003cpath d=\"M22 3h-6a4 4 0 0 0-4 4v14a3 3 0 0 1 3-3h7z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cdiv class=\"res-text\"\u003e\n\u003cdiv\u003eAPI documentation\u003c\/div\u003e\n\u003cdiv class=\"url\"\u003egithub.com\/mbanon\/fastspell\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection class=\"block soft\" id=\"alternatives\"\u003e\u003cdiv class=\"head\"\u003e\n\u003cspan class=\"eyebrow\"\u003eCompare\u003c\/span\u003e\u003ch2\u003eAlternatives\u003c\/h2\u003e\n\u003cp class=\"lead\"\u003eTools that compete with or complement FastSpell.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alts\"\u003e\n\u003cspan class=\"alt\"\u003e\u003cspan class=\"av\"\u003eP\u003c\/span\u003e pycld2\u003c\/span\u003e\u003cspan class=\"alt\"\u003e\u003cspan class=\"av\"\u003eP\u003c\/span\u003e pycld3\u003c\/span\u003e\u003cspan class=\"alt\"\u003e\u003cspan class=\"av\"\u003eL\u003c\/span\u003e langid.py\u003c\/span\u003e\u003cspan class=\"alt\"\u003e\u003cspan class=\"av\"\u003eS\u003c\/span\u003e spaCy fastlang\u003c\/span\u003e\u003cspan class=\"alt\"\u003e\u003cspan class=\"av\"\u003eL\u003c\/span\u003e langdetect\u003c\/span\u003e\u003cspan class=\"alt\"\u003e\u003cspan class=\"av\"\u003eN\u003c\/span\u003e NLTK\u003c\/span\u003e\u003cspan class=\"alt\"\u003e\u003cspan class=\"av\"\u003eG\u003c\/span\u003e guess_language-spirit\u003c\/span\u003e\u003cspan class=\"alt\"\u003e\u003cspan class=\"av\"\u003eF\u003c\/span\u003e fastText\u003c\/span\u003e\u003cspan class=\"alt\"\u003e\u003cspan class=\"av\"\u003eH\u003c\/span\u003e HeLI-OTS\u003c\/span\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection class=\"block\" id=\"faq\"\u003e\u003cdiv class=\"head\"\u003e\n\u003cspan class=\"eyebrow\"\u003eFAQ\u003c\/span\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is FastSpell based on? \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"12\" y1=\"5\" x2=\"12\" y2=\"19\"\u003e\u003c\/line\u003e\u003cline x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv class=\"ans justify\"\u003eOn two stages. fastText proposes a language for the text, and when that proposal is close to the target language, Hunspell arbitrates by comparing spelling error rates across the candidate dictionaries.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow many languages does it cover? \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"12\" y1=\"5\" x2=\"12\" y2=\"19\"\u003e\u003c\/line\u003e\u003cline x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv class=\"ans justify\"\u003esimilar.yaml declares 68 target languages together with the languages each one can be confused with, and hunspell.yaml declares 92 dictionary entries.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eUnder which license is it published? \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"12\" y1=\"5\" x2=\"12\" y2=\"19\"\u003e\u003c\/line\u003e\u003cline x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv class=\"ans justify\"\u003eGPL-3.0. It is free software, and the full source is public in the GitHub repository.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow do I install it? \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"12\" y1=\"5\" x2=\"12\" y2=\"19\"\u003e\u003c\/line\u003e\u003cline x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv class=\"ans justify\"\u003eEither pip install fastspell or conda install -c conda-forge -c bitextor fastspell. The system package python3-dev is a prerequisite, and a known build failure on cyhunspell 2.0.2 has a documented workaround in the README.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhich version of Python does it need? \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"12\" y1=\"5\" x2=\"12\" y2=\"19\"\u003e\u003c\/line\u003e\u003cline x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv class=\"ans justify\"\u003eThe project contradicts itself here: pyproject.toml declares requires-python = \"\u0026gt;=3.10\", while the README still announces Python3.8 or higher. Both are first-party statements, so plan for 3.10 or higher and treat the README figure as possibly out of date.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the difference between aggressive and conservative mode? \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"12\" y1=\"5\" x2=\"12\" y2=\"19\"\u003e\u003c\/line\u003e\u003cline x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv class=\"ans justify\"\u003eAggressive always commits to a language. Conservative returns the label unk when the check is inconclusive, which is the safer choice when a wrong label costs more than a missing one.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I use it without writing Python? \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"12\" y1=\"5\" x2=\"12\" y2=\"19\"\u003e\u003c\/line\u003e\u003cline x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv class=\"ans justify\"\u003eYes. Installing the package also installs a fastspell command, so you can label a file or a stream straight from the shell.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs my text sent anywhere? \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"12\" y1=\"5\" x2=\"12\" y2=\"19\"\u003e\u003c\/line\u003e\u003cline x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv class=\"ans justify\"\u003eNo. FastSpell runs locally on your machine. The only documented network traffic is the download of the fastText model and the Hunspell dictionaries.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs there a web API? \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"12\" y1=\"5\" x2=\"12\" y2=\"19\"\u003e\u003c\/line\u003e\u003cline x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv class=\"ans justify\"\u003eNo REST endpoint exists. The interfaces are a Python module, with from fastspell import FastSpell and then getlang(), and a command-line tool.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow should I cite it? \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\"\u003e\u003cline x1=\"12\" y1=\"5\" x2=\"12\" y2=\"19\"\u003e\u003c\/line\u003e\u003cline x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv class=\"ans justify\"\u003eCite the paper FastSpell: The LangId Magic Spell, published at LREC-COLING 2024, pages 7133-7140, Torino, Italia, ELRA and ICCL.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection class=\"block conclusion\" id=\"conclusion\"\u003e\u003cdiv class=\"head\"\u003e\n\u003cspan class=\"eyebrow\"\u003eConclusion\u003c\/span\u003e\u003ch2\u003eShould you pick FastSpell?\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rich justify\" style=\"max-width:80ch\"\u003e\u003cp\u003eFastSpell is a niche tool that knows exactly what it is for. It does not try to identify every language on earth; it tries to stop a pipeline from calling Galician Spanish, Catalan Spanish or Bosnian Croatian, which is the precise failure mode that quietly poisons a multilingual corpus. The two-stage design, with fastText proposing and Hunspell arbitrating through spelling error rates, is simple enough to reason about and open enough to adjust: the 68 target languages and their confusable neighbours live in YAML files you can edit without touching a line of code. The method was published and evaluated at LREC-COLING 2024, and a first-party benchmark sets it against nine other identifiers, which is more accountability than tools of this kind usually offer. It is used in the corpus-cleaning ecosystem behind ParaCrawl, MaCoCu and HPLT, a reasonable proxy for whether it survives contact with real data. Being free software under GPL-3.0, it costs nothing, can be audited, and runs entirely on your own machine, so no text ever leaves your infrastructure. The reservations are practical rather than conceptual. Installation is more demanding than the single pip command suggests: system packages are needed, and cyhunspell has a documented failure mode with a manual workaround. The project declares POSIX\/Linux support only, its documentation stops at the README, and the release rhythm is slow. The README and pyproject.toml also disagree about the minimum Python version, the kind of small inconsistency that costs an afternoon. If you work with closely related languages at scale and are comfortable in a terminal, FastSpell is worth the setup effort. If you want a graphical tool, a hosted endpoint or something a non-technical colleague can run unaided, look elsewhere.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"cta-row\"\u003e\u003ca class=\"btn btn-primary\" href=\"https:\/\/pypi.org\/project\/fastspell\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"16\" height=\"16\"\u003e\u003cpath d=\"M15 3h6v6\"\u003e\u003c\/path\u003e\u003cpath d=\"M10 14 21 3\"\u003e\u003c\/path\u003e\u003cpath d=\"M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Visit FastSpell\u003c\/a\u003e\u003c\/div\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Prompsit Language Engineering, S.L.","offers":[{"title":"Default Title","offer_id":58389616820555,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"url":"https:\/\/guidaio.com\/products\/fastspell-prompsit","provider":"Guidaio","version":"1.0","type":"link"}