Chatalyze

Chatalyze is a privacy-first, browser-based chat analytics tool that transforms exported messaging data into interactive insights and visualizations. Built with TypeScript and React using the Vite build tool, the app supports chat history analysis from 8+ major platforms including WhatsApp, Instagram, Facebook Messenger, and Telegram. Users can upload their exported chat files and instantly explore communication statistics, timelines, rankings, and engagement patterns — all processed locally with zero data sent to servers. With features like advanced search, PDF report generation, smart filtering, and multi-theme UI, Chatalyze delivers a seamless and secure experience. Designed with performance and UX in mind, it enables scalable analysis of large datasets while maintaining complete data ownership and privacy. Ideal for personal analysis, social research, or communication pattern studies.