XEOS is an experimental 32/64 bits Operating System for x86 platforms, written from scratch in Assembly and C.
It includes a C99 Standard Library, and aims at POSIX/SUS2 compatibility.
Its main purpose is educationnal, and to provide people interested in OS development with a clean code base.
While available only for x86, it may evolve to support other platforms.
The project is available on GitHub.