Apps similar to Linux kernel include FreeBSD, which is free and open source. Other options are OpenBSD, Linux-libre, Redox and NomadBSD. You can choose from more than 10 Operating Systems like Linux kernel for Linux, Mac, self-hosting, Windows and Chrome OS.
ExectOS aims to be a stable and flexible, general purpose operating system written from scratch. It is designed to be modular, maintainable and compatible with existing software. It implements a brand new XT architecture and features own native application interface.
Nanos is a new kernel designed to run one and only one application in a virtualized environment. It has several constraints on it compared to a general purpose operating system such as Windows or Linux - namely it's a single process system with no support for running...
United States
Risc OS is an open-source OS specifically designed to run on the ARM chipset.
United Kingdom
Darwin is the Open Source operating system from Apple that forms the basis for Mac OS X, and PureDarwin is a community project to make Darwin more usable (some people think of it as the informal successor to OpenDarwin.
