ChatLab

ChatLab is a desktop and CLI application that ingests your exported chat history from mainstream messaging apps and turns it into a queryable, analyzable personal corpus. It ships with 30+ built-in analyses, including sentiment scoring, topic detection, activity heatmaps, relationship reviews, knowledge mining, session summaries, smart and deep search, and a conversation replay view. An AI Agent layer sits on top, letting you ask natural-language questions and run SQL queries against your own messages without uploading them to a third party.

The pitch is privacy: data stays in a local database on your machine, and the team explicitly recommends running local models when hardware allows. That makes it a fit for power users, journalists, researchers, and anyone who wants to mine years of WhatsApp/Telegram/WeChat-style history without handing it to a SaaS. A standardized data-abstraction layer plus custom adapters means you're not locked to one chat app. The project is open-source on GitHub with an npm-installable CLI (`chatlab-cli`), and the underlying AI is BYOM rather than tied to a specific provider.

The site doesn't publish pricing, model lists, or supported adapters in detail, and the AI quality will depend entirely on whichever model you wire up. Treat it as a power-user toolkit rather than a polished consumer product.