Hey Product Hunt 👋 I'm Johan, 21yo solo founder from France. I built PromptVault because I was losing my best prompts in Notion and copy-pasting the same instructions into ChatGPT 20 times a day. PromptVault is a Chrome extension that: - Saves your prompts in a local vault (synced across devices) - Injects them directly into 10+ AI platforms: ChatGPT, Claude, Gemini, Mistral, DeepSeek, Grok, Copilot, Poe, HuggingChat, Perplexity - Supports dynamic variables ({{topic}}, {{tone}}, {{length}}) - Ships with 12 expert prompts using real frameworks (SCAMPER, PAS, STAR, role definitions) - Opens as a floating palette with Ctrl+Shift+P on any supported site It's free, open source, and I'm committed to keeping the core free forever. Freemium will only add things like cloud sync, sharing, and template marketplace — later. Would love your feedback, especially from heavy AI users. What's missing? What would you add? Thanks for checking it out 🙏

PromptVault

AI Prompt Manager for ChatGPT, Claude & 10+ Platforms

AI Prompt Manager for ChatGPT, Claude & 10+ Platforms