PromptAtlas.ai
Master prompt engineering, from first prompt to pro.
PromptAtlas.ai launched on May 18, 2025 with 10 votes, #2,185 of 7,905 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
PromptAtlas is the ultimate workspace for AI prompt creators. Save, organize, test, version, and reuse your prompts. Whether you're a marketer, dev, or creative—PromptAtlas makes prompt engineering simple, fast, and collaborative.
A free AI prompt library for the prompts you reuse: folders, tags, fill-in variables, version history and one-click copy for ChatGPT, Claude and Gemini.
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. 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. 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…from promptatlas.ai
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