OpenIM is an open source instant messaging component built by IM technical experts. OpenIM includes IM server and client SDK, which realizes important features such as high performance, light weight, and easy expansion. By integrating OpenIM components and privatizing the deployment of the server, developers can quickly integrate instant messaging and real-time network capabilities into their own applications, and ensure the security and privacy of business data.
openim.io https://github.com/openimsdk/open-im-server