Kupfer is an Arch Linux ARM derived distribution designed to support the Linux mobile effort. It is to Arch Linux what postmarketOS is to Alpine, or Mobian is to Debian.
The Linux mobile ecosystem moves fast and has to support a lot of devices with patched kernels and a myriad of device-specific quirks, many of these changes will never be suitable in upstream distribution repositories. Similarly, many of the userspace tools in the ecosystem are very new and receive regular updates, breakages and patches, upstream distros can't be expected to manage all of this.
koekeishiya/yabai: A tiling window manager for macOS
A tiling window manager for macOS based on binary space partitioning - GitHub - koekeishiya/yabai: A tiling window manager for macOS based on binary space partitioning
LiteOS kernel for devices with few resources| such as the MCU | 适用于MCU等各种资源极小设备的LiteOS内核 - GitHub - openharmony/kernel_liteos_m: LiteOS kernel for devices with few resources| such as the MCU | 适用于M...
This is the official site for MkLinux, a port of Linux to the Power Macintosh, running Linux 2.0.xx on the OSF Mach 3 MicroKernel. This was originally a project by Apple Computer, Inc. and the Open Software Foundation.
Comparison of operating system kernels - Wikipedia
A kernel is a component of a computer operating system.[1] A comparison of system kernels can provide insight into the design and architectural choices made by the developers of particular operating systems.