Jitsi Meet is an open-source video conferencing platform that provides real-time communication with features such as HD audio/video, screen sharing, chat, polls, breakout rooms, recording, live streaming, virtual backgrounds, and end-to-end encryption. The architecture is client-server: the web and mobile clients (React/React Native) communicate via XMPP (Prosody server) for signaling and WebRTC for media, with optional server-side components like Jitsi Videobridge and Jicofo for scalable conferencing. The codebase is organized into feature modules under `react/features/`, each with its own Redux actions, reducers, middleware, and platform-specific UI components (web vs. native). Key entry points include `app.js` for the web app, `react/index.native.js` for mobile, and native SDKs for iOS and Android. External dependencies include Prosody, Jitsi Videobridge, Jicofo, and various third-party services (Google, Microsoft, Dropbox, Amplitude). The project also includes server-side Prosody plugins (Lua) for authentication, room management, and monitoring, as well as a comprehensive test suite using WebDriverIO and custom load testing frameworks.
Yaxim is an Android-based XMPP/Jabber instant messaging client. It maintains a persistent XMPP connection via a background service (XMPPService) using the Smack library, with UI components binding to the service for message exchange and roster management. The app features multiple product flavors (main, branded, F-Droid, Google Play variants) and supports core XMPP extensions including MAM, Carbons, and Message Archiving. Data persistence is handled through SQLite ContentProviders for chat history and roster management. The application demonstrates a clean separation of concerns between networking, data storage, and UI layers, though it shows signs of technical drift due to reliance on deprecated Android Support Libraries and outdated APIs like Android Beam.