The AI prompt library for prompts you actually reuse
Most good prompts die in a chat history. PromptAtlas is a calm place to keep the ones you come back to: folders and tags to file them, {variables} for the parts that change, and a version saved every time you edit. It is completely free, works offline, and lets you run prompts with your own API key for OpenAI, Anthropic, Google or Mistral.
Your best prompt is not lost in a chat history, a Notes file and three Slack messages. It has one address, and search finds it in a couple of keystrokes.
You stop rewriting the same brief every Monday. Keep the changing parts as {variables}, fill them in, copy the finished text.
When a prompt that worked stops working, you can read the version that worked and put it back. Every save keeps the previous text automatically.
Your library travels with you. It works offline, installs like an app on your phone, and exports in full to JSON, Markdown or CSV whenever you want out.
How to keep them in PromptAtlas
Folders and tags · Sort prompts into folders per project and add colored tags on top, so the same prompt can live under a client and under #seo at once.
Fill-in variables · Wrap the parts that change in {curly braces}, then fill them in at reuse time and copy the finished text with one click.
Version history · Every save keeps the previous text automatically, so you can read or restore any earlier version instead of guessing what you changed.
Instant search · Search titles, prompt bodies and tags together, and jump straight to a tag by typing #seo.
Sharing and Explore · Publish any prompt as a public link you can send to a teammate, or browse the community Explore feed for prompts other people keep.
Offline and portable · Install it as an app, use it without a connection, and import or export your whole library in JSON, Markdown or CSV.
FAQ
Is PromptAtlas really free?
Yes. Every feature is free, with no paywall, no Pro tier and no limits on prompts, folders, tags or versions. There is nothing to unlock later.
Which AI models does it work with?
Any of them, because a prompt is just text you copy wherever you work. If you want to run prompts inside PromptAtlas, add your own API key for OpenAI, Anthropic, Google or Mistral and you pay the provider directly at their rates.
Are my prompts private?
Your library is yours alone unless you choose to publish a prompt with a public link or post it to the Explore feed. API keys you add stay on your device and are never sent to our servers.
Can I export everything?
Anytime, in JSON, Markdown or CSV, including version history. Import works the same way in reverse, so moving in or out is a one-minute job.
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Build your prompt library
Save the prompts that work, add variables, keep versions and find them again in seconds.