WuKongIM

WuKongIM is open-source messaging infrastructure that you build your own product on. It takes care of client connections, storing and syncing messages, presence and delivery to online users, while your application keeps ownership of the user interface, accounts and business rules.

The project suits personal and group chat, customer support, application notifications and streaming AI replies. A key design point is a self-contained messaging core with built-in storage and clustering, so no external database, cache or message queue is required. The repository offers a quick start, a live demo, a showcase and documentation, and the README is available in Chinese as well as English. It is written in Go.

WuKongIM is licensed under Apache-2.0 and runs on your own servers, which suits teams that want to embed chat in their apps without depending on a third-party messaging service or running extra infrastructure.