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

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

A community-driven replacement for JSQMessagesViewController

Chat over SSH.

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

Exports Discord chat logs to a file

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