x16-PRos

x16-PRos is a minimalistic 16-bit OS written in NASM for the x86 architecture. It features a command line interface, FAT12 file system support, and provides rich set of system calls.

PRosBSD

PRosBSD is an experimental OS written in C and C++, inspired by x16-PRos, aiming for compatibility with the FreeBSD ABI and memory safety.