Fiwix

Fiwix is an operating system kernel based on the UNIX architecture and fully focused on being POSIX compatible. It is designed and developed mainly as a hobby OS, but it also serves for educational purposes. It runs on the i386 hardware platform and is compatible with a good base of existing GNU applications. It follows the System V Application Binary Interface and is also Linux 2.0 System Call ABI mostly compatible
The FiwixOS 3 operating system is a Fiwix distribution. It uses the Fiwix kernel, includes a GNU toolchain (GCC, Binutils, Make) and uses the Newlib v3.1.0 as its C standard library. Its primary file system is the Ext2.
Features.
Features according to the official website include: