instant-messaging

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

即时通讯(IM)系统

General IM UI components. Android/iOS/RectNative ready. 通用 IM 聊天 UI 组件，已经同时支持 Android/iOS/RN。

Open source alternative communication platform.

Conversations is an open source XMPP/Jabber client for Android

Jitsi is an audio/video and chat communicator that supports protocols such as SIP, XMPP/Jabber, IRC and many other useful features.

📱 Wire for iOS (iPhone and iPad)

免费IM系统，IM即时通信消息系统(含一对一文字聊天，群聊，聊天室)，免费一对一voip实时通话，录屏，webrtc服务端，免费直播连麦，互动直播，视频直播，RTSP拉流，RTMP推流，语音对讲，免费在线会议，视频会议等服务端程序，支持物联网平台，✨万水千山总是情，来个star行不行✨

golang im server

Movim - Decentralized social platform

Chat SDK Android - Open Source Mobile Messenger

Open source alternative communication platform

🕊️ The world's most advanced open source instant messaging engine for 100K~10M concurrent users https://turms-im.github.io/docs

Spacebar backend made with Typescript and love (and a bit of C++)

⚡ The next-generation programmable SIP Server

Chat SDK iOS - Open Source Mobile Messenger

Desktop client for Cabal, the p2p/decentralized/local-first chat platform.

vscode qq extension based on android qq protocol

YiChat-基于tigase的独立IM系统

IM server based on netty. Provides a client jar. Integrate with your own login system.基于netty实现的IM服务端,提供客户端jar包,可集成自己的登录系统