openimsdk / open-im-server

IM Chat OpenClaw

juggleim / im-server

IM Chat, High-performance, scalable, self-hosted instant messaging server in Go — private chat, groups, chatrooms, WebSocket and REST APIs.

JackJiang2011 / MobileIMSDK

原创全平台IM通信层框架，轻量级、高度提炼，历经10年、久经考验。可能是市面上唯一同时支持UDP+TCP+WebSocket三种协议的同类开源框架，支持 iOS、Android、Java、H5、小程序、Uniapp、鸿蒙Next，服务端基于Netty。

TencentCloud / TIMSDK

Free Chat SDK (IM SDK) — 1,000 MAU/month free forever with push notifications & no concurrency limits. Build in-app messaging with chat API, UIKit & send message. Supports Android, iOS, Flutter, Web, React Native, uni-app, HarmonyOS & more.

openimsdk / openim-sdk-core

Instant Messaging