Chat Locker is an app for importing, searching and exporting your conversation history from ChatGPT, Claude, Gemini and Grok. Conversations are stored locally by default, and there is a desktop app for Windows, macOS and Linux. Local use is free and needs no account; cloud sync and team sharing are optional. It is useful if you want to find an old answer again, keep conversations from several assistants in one place, or save a copy as Markdown or JSON files. See the pricing page for plans and the roadmap for what has shipped so far.