1, Tongxin UOS: domestic operating system developed by Tongxin Software Technology Co., Ltd., based on Linux kernel, with high stability and security. UOS provides multiple versions, including desktop version, server version and developer version, which are suitable for different application scenarios. Support a variety of processor architectures and provide rich application software and tools for users to develop and manage. In addition, UOS also has high security performance, including kernel-level security mechanism, data encryption and other protection measures.

2. You Qilin: UbuntuKylin is an open source operating system jointly developed by National University of Defense Technology and Canonical, which supports x86 and ARM architectures. UbuntuKylin combines the stability and ease of use of Linux, and provides rich Chinese support and localization services.

3. Zhongke Fangde: Desktop operating system and server operating system, supporting x86 and ARM architecture. Fangde desktop operating system is developed based on Linux kernel, which is safe, stable, easy to use and convenient, and provides a wealth of office software and tools.