The communications platform that puts data protection first.

Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

A customizable life embetterment robot.

💬 The most complete chat UI for React Native

即时通讯IM

Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots

微信助手：1.每日定时给好友（女友）发送定制消息。2.机器人自动回复好友。3.群助手功能（例如：查询垃圾分类、天气、日历、电影实时票房、快递物流、PM2.5等）

Keybase Go Library, Client, Service, OS X, iOS, Android, Electron

🐀 A link aggregator and forum for the fediverse

Take control over your live stream video by running it yourself. Streaming + chat out of the box.

即时通讯(IM)系统

Elegant Facebook Messenger desktop app

💬 Unofficial WeChat client built with React, MobX and Electron.

An interesting open source chat application. Developed with node.js, mongoDB, socket.io and react

A community-driven replacement for JSQMessagesViewController

Robust, Ubiquitous and Massively Scalable Messaging Platform (XMPP, MQTT, SIP Server)

Chat over SSH.

Exports Discord chat logs to a file

💬 ‎ Modern, responsive, cross-platform, self-hosted web IRC client

Venom is the most complete javascript library for Whatsapp, 100% Open Source.