PromptAtlas
PromptAtlas is an entirely free AI prompt library: it keeps reusable prompts in folders and color-coded tags, with {curly-brace} variables, automatic version history and instant search. It works offline and runs prompts with your own API key.
What is PromptAtlas?
PromptAtlas is a free library for AI prompts, built on an observation the site states plainly: most good prompts die in a chat history. The tool gives the ones you come back to a stable home, through four mechanisms. Prompts sit in project folders and carry color-coded tags that cut across those folders, so a single prompt can live under a client and under #seo at the same time. The parts that change become {curly-brace} variables you fill at reuse, before copying the finished text in one click. Every save automatically keeps the previous text, building a version history you can read and restore from; restoring keeps the current text as a new version, so nothing is ever overwritten. Instant search covers titles, bodies and tags together, with a #tag syntax to jump straight to a tag.
Around that core sits a Builder that runs a prompt in place using your own API key for OpenAI, Anthropic, Google or Mistral. The key stays on your device, the provider bills you directly, and a free-form model id means new releases work immediately. Twenty hand-written templates, rated Basic, Advanced or Expert, cover everything from zero-shot to tree-of-thought prompting. Sharing is deliberately narrow: one revocable public link per prompt, readable without an account, plus an Explore community feed. An account, created with an email or a Google sign-in, is required so the library syncs across devices, while a local copy in the browser keeps it instant and usable offline. The app installs as a PWA and speaks twelve interface languages.
The economics are unusual. PromptAtlas is an independent, non-commercial project published by a private individual, currently showing application version v0.4. Everything is free: no paid tier, no quota, no advertising, no data sale, no training on your content, and a full export in JSON, Markdown or CSV whenever you want one. A Buy Me a Coffee tip jar is announced as opening soon and buys nothing extra beyond a Supporter badge. The limits are owned openly: no live co-editing, no comments, no team spaces, no relational database and no custom views.
What it does
- Store reusable AI prompts and organize them in project folders crossed with color-coded tags
- Turn the changing parts of a prompt into {curly-brace} variables, fill them at reuse and copy the finished text in one click
- Read and restore any earlier version, since every save keeps the previous text automatically
- Search titles, bodies and tags together, with a #tag syntax to jump straight to a tag
- Run a prompt inside the app with your own OpenAI, Anthropic, Google or Mistral API key
- Share a prompt through a revocable public link, or publish it to the Explore community feed
- Import and export the whole library in JSON, Markdown or CSV, version history included
When to use PromptAtlas / When not to
A quick filter to help you decide if PromptAtlas is the right fit.
When to use PromptAtlas
- Marketing, SEO and content professionals who rewrite the same prompts week after week for emails, LinkedIn posts, ads and articles.
- Freelancers and consultants who need to hand proven prompts to a client or a collaborator instead of re-explaining each one.
- People working across several assistants at once, whose prompts are currently scattered between ChatGPT, Claude, Gemini and Mistral, plus notes, documents and screenshots.
- Sales and customer-support individuals who rely on repeatable message templates and want variables filled in at reuse rather than edited by hand.
- Privacy-minded users who want EU-hosted data, no training on their content, and the ability to export everything in JSON, Markdown or CSV at any moment.
When not to use PromptAtlas
- Teams that need live co-editing, comments or suggestions: the publisher states plainly that PromptAtlas is a single-owner library.
- Organizations looking for shared team spaces, roles or permissions, which are mentioned only as a possible future addition, never as an existing feature.
- Notion users who depend on relational databases, custom views and advanced filtering or sorting, an area where the site itself concedes Notion wins.
- Anyone looking for a general-purpose workspace: there are no notes, no wikis, no tasks and no rich formatting for long-form writing.
- Developers who want to drive the library programmatically, and corporate buyers who need a signed data processing agreement before rollout: no public API and no DPA are offered.
How to use PromptAtlas
A typical end-to-end flow, from setup to results.
- Open the web application and create an account with an email and password, or sign in with Google: about ten seconds either way.
- Create a folder per project, client or channel, then add reusable tags on top so one prompt can sit under a client and under #seo at once.
- Paste an existing prompt into the library and give it a title you will recognize later.
- Wrap the parts that change from one use to the next in {curly braces} so they become fillable variables.
- At reuse, fill the variables in the form field, then copy the finished text in one click.
- Save after each edit: the previous text is kept automatically, so the version history builds itself without any action from you.
- Open the detail screen to review earlier versions and restore one; the current text is kept as a new version, so nothing is lost.
- Optional: open Settings, then API keys, paste a provider key for OpenAI, Anthropic, Google or Mistral, and use the Builder to run prompts in the app. Without a key, running is disabled but copying still works.
- Import an existing collection from JSON, Markdown or CSV, duplicates being detected and skipped, and export the whole library the same way whenever you want.
- Install the PWA to keep the library available offline and on a phone.
Pros & Cons
Pros
- Entirely free, with no paid tier and no quota, and a published commitment that nothing already in the free product will ever move behind a paywall
- Real portability: a complete export in three open formats, version history included, in a single gesture, with import working the other way round
- API keys stay on the device and executed prompts travel straight to the chosen provider, so no prompt text transits the publisher's servers
- No model training on user content, no advertising, no data sale, and no analytics consent banner because audience measurement uses neither cookie nor fingerprint
- Non-destructive automatic versioning: every save preserves the previous text and restoring never overwrites the current one
- Data hosted in the European Union on Firestore multi-region eur3, with named processors and stated transfer safeguards
- Works offline, installs as a PWA, ships in 12 interface languages, and carries detailed, dated legal documentation unusual for a project of this size
Cons
- Anonymous publisher: no company name, no postal address and no named individual, an anonymity permitted for a non-professional publisher by Article 6-III-2 of the French LCEN but which leaves little to rely on
- No real-time collaboration, no comments and no team space: the library is single-owner by design
- The legal notice, terms, privacy policy and cookie policy have no public URL and are readable only inside the application, so they cannot be linked, archived or cited
- Uncertain longevity: a non-commercial one-person project displaying application version v0.4, whose terms give no availability commitment and reserve the right to suspend or discontinue features
- No data processing agreement is offered, which is a genuine obstacle to corporate deployment
- No public API, no browser extension and no native store application: mobile use goes through the PWA, and an account is required for syncing
- Users coming from Notion will miss relational databases, custom views and advanced filters and sorts, and the announced tip jar is still described as opening soon
Pricing & Plans
PromptAtlas is free of charge. A free plan exists and it is the only plan: every feature is available with no paywall, no Pro tier and no limit on the number of prompts, folders, tags or versions. No payment card is requested, no trial period applies and no upsell follows. There is therefore no entry price to report, in any currency. The only possible expense is external and optional: if you choose to run prompts inside the application with your own API key, the AI provider you selected, OpenAI, Anthropic, Google or Mistral, bills that usage directly to you at its own rates. A Buy Me a Coffee tip jar is announced as opening soon; the amount is chosen freely, it is not a subscription, and it unlocks no feature.
- unlimited prompts
- folders
- tags and versions
- {curly-brace} variables and one-click copy
- prompt execution with your own API key
- and import and export in JSON
- Markdown and CSV. It is the only plan.
- the amount is chosen freely
- it is a donation rather than a subscription
- it unlocks no feature
- and it adds only a Supporter badge on the public profile and in Explore. The published rule is that nothing in the free product will ever move to a paid side.
Data, GDPR & hosting
A consolidated view of how PromptAtlas handles your data.
GDPR overview
GDPR implementation is documented in concrete terms. The controller is the publisher, a private individual, reachable at support@promptatlas.ai. Two legal bases are cited explicitly: Article 6(1)(b) for the account and the library, Article 6(1)(f) for cookieless audience measurement and support emails. The rights listed are access, rectification, erasure, restriction, objection, portability and post-mortem instructions under French law, portability being served immediately by the in-app export. The CNIL is named as supervisory authority. Processors are disclosed by name: Google (Firebase), Vercel, Cloudflare. Transfers outside the EEA rely on the EU-US Data Privacy Framework and/or standard contractual clauses. Stated security measures: TLS 1.3 in transit, encryption at rest, per-user isolation and least privilege. Minimum age is 15. No Article 27 representative is designated, none being required for an EU-established publisher, and no DPA is published. Privacy policy effective 02/08/2026; legal notice and terms 11/07/2026.
Who owns the data?
The terms of use, dated 11/07/2026, state that your prompts, folders and tags belong to you. You grant the publisher only the limited licence strictly necessary to operate the service: storing your content, syncing it and displaying it back to you. Nothing in the documents allows resale, publication or use for model training. Two exceptions come from your own actions: a public share link makes that snapshot readable by anyone holding it until you revoke it, and a post published to the Explore feed is visible to everyone. Provider API keys never leave your device, and a complete export in JSON, Markdown or CSV is available at any time.
Reuse rights
You may reuse your own content freely and without asking: nothing restricts what you do with the prompts you write, and a one-click export in JSON, Markdown or CSV, version history included, lets you take the whole library elsewhere. On the publisher's side, the privacy policy dated 02/08/2026 limits collection to what the service needs. Account data (email, username, authentication identifiers, with password hashing delegated to Firebase Authentication) and library data (prompts, folders, tags, version history, share snapshots) are processed under the contract basis of Article 6(1)(b) GDPR. Aggregated Cloudflare Web Analytics, which sets no cookie and writes nothing to local storage, and support emails rest on legitimate interest, Article 6(1)(f). There is no billing data because the service is free, no advertising profile and no marketing list, and content is never used to train models. When you run a prompt, your API key and the prompt text go straight from your browser to the provider you selected: neither reaches the publisher's servers.
Data retention & training
Hosting summary
Accounts and libraries are stored on Google Firebase (Firestore), in the European Union, multi-region eur3. The application itself is served by Vercel, which holds static assets only and, according to the legal notice, no personal data at rest. A local copy of the library also sits in the user's browser, under the user's sole control, which is what makes offline use possible. The legal notice names both hosting entities, Vercel Inc., 440 N Barranca Ave #4133, Covina, CA 91723, United States, and Google Ireland Ltd, Gordon House, Barrow Street, Dublin 4, Ireland; these are the hosts, not the publisher, whose own address is not published anywhere. Where processing reaches outside the EEA, the privacy policy invokes the EU-US Data Privacy Framework and/or standard contractual clauses. Stated security measures are TLS 1.3 in transit, encryption at rest, per-user isolation enforced by database security rules, and least-privilege access. Provider API keys and the text of executed prompts never reach that infrastructure: they travel from the browser directly to the AI provider chosen by the user.
Things to keep in mind
Risks and trade-offs to weigh before adopting PromptAtlas.
- The publisher's identity is not published, so recourse is limited in the event of a dispute, even though the anonymity is legal under Article 6-III-2 of the French LCEN and the hosting providers hold the identity.
- The terms give no availability commitment: the service runs on a best-effort basis and features may evolve, be suspended or be discontinued. The site itself advises keeping exports of anything you cannot afford to lose.
- A public share link stays readable by anyone holding it until you revoke it, so a snapshot shared once can circulate well beyond its intended reader.
- API keys live in the browser profile and anyone with access to that profile can read them, which is why the app advises against adding keys on a shared machine. Provider usage is billed by the provider, outside PromptAtlas's control.
- Deleting the account erases all cloud data immediately and permanently, with no announced grace period and no way back.
- The legal documents have no public URL and only their English version prevails, so you cannot archive or cite the exact terms you accepted without going through the application.
- A prompt library that becomes the single place where your working knowledge lives deserves regular exports, and leaning on saved prompts can quietly replace the habit of rethinking a task from scratch.
Setup & Integrations
Technical difficulty
Very low. PromptAtlas is a web application with nothing to install: you open it and create an account with an email and password or a Google sign-in, about ten seconds either way. Everyday use needs no technical configuration, only creating a folder, pasting a prompt and wrapping the changing parts in curly braces. Two optional steps go further: pasting a provider API key in Settings, then API keys, where the prefix is checked and the key tested on first run, and installing the PWA for offline and mobile use. Imports from JSON, Markdown or CSV detect duplicates automatically.
Deployment
Integrations
Supported languages
Behind PromptAtlas
Resources
All the official URLs gathered for verification and reference.
Alternatives
Tools that compete with or complement PromptAtlas.
Frequently asked questions
Is PromptAtlas really free?
Which AI models does it work with?
Are my prompts private?
Is my content used to train AI models?
Can I export everything?
Do I need an account?
Where is my data stored?
Can I delete my account?
Does it work offline?
Is there real-time collaboration?
Should you pick PromptAtlas?
PromptAtlas answers a narrow, real problem well: the reusable prompt that gets lost in a chat history. Folders and cross-cutting tags, {curly-brace} variables, non-destructive version history and instant search are enough to turn a scattered collection into something you can actually work from, and the twenty templates and the in-app Builder extend that without complicating it. Because the product is entirely free, with no quota and no card requested, and because the whole library exports in JSON, Markdown or CSV with its history in one gesture, the cost of trying it is close to zero and the risk of lock-in is genuinely limited. The reservations concern the frame rather than the product. The publisher is an anonymous private individual, which French law allows for a non-professional publisher but which leaves little recourse in a dispute. The project is non-commercial, one person deep, at application version v0.4, and its own terms give no availability commitment. The legal documents are detailed and dated, yet none of them has a public URL, so they cannot be linked or archived. For an individual, that combination is acceptable, provided you keep your own exports of anything you cannot afford to lose. For a team or a company, it is not: there is no collaboration, no team space, no public API and no data processing agreement, and buyers who need contractual guarantees will have to look elsewhere for now. Recommended for individual practitioners who reuse prompts regularly, on the understanding that the library is yours to export and that continuity rests on a single anonymous author.
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