SerenityOS
| The SerenityOS Desktop | |
| Developer | the SerenityOS community | 
|---|---|
| Written in | Serenity C++ | 
| OS family | Unix-like | 
| Working state | Current | 
| Source model | Open source | 
| Initial release | October 10, 2018 | 
| Repository | |
| Available in | English | 
| Package manager | Ports (as part of the build system) | 
| Platforms | x86-64 | 
| Kernel type | Monolithic | 
| Userland | POSIX | 
| Default user interface | GUI | 
| License | BSD-2-Clause | 
| Official website | www | 
SerenityOS is a free and open source desktop operating system. It features a preemptive kernel, currently supports x86-64, ARM, and RISC-V based computers, and hosts multiple complex applications including its own web browser and integrated development environment (IDE). Development started in 2018—initially as a one-man project of Swedish programmer Andreas Kling—and is now developed by a community of hobbyists. The project is hosted at GitHub and is described as being not catered to "non-technical users".