Rocket.Chat is an open-source team chat and collaboration platform with channels, direct messages, video/audio calls, file sharing, and localization. It supports self-hosting and custom integrations.

Rocket.Chat is fully self-hostable in China. Developers deploy community or enterprise editions on domestic servers and integrate with local login/auth solutions. It's widely used for secure internal collaboration in companies.

The information regarding service availability in China is provided for general reference purposes only. Due to the dynamic nature of network conditions and regulatory environments, the actual accessibility of these services may vary over time and by location. Users are advised to verify the current status independently.