SIMD macro assembler unified for ARM, MIPS, PPC and x86
A microkernel-based multiserver operating system written from scratch.
Prolog to C compiler with runtime for DOS, Windows and Raspbian
RTOS for Secure, Safe and Real-Time Systems
Reductively Architected Breviloquently Built Information Environment
64-BIt Operating System with Compiler
a UNIX GUI to monitor Core i7 & Core 2 processors
My own operating system.
A public domain bootloader for x86-64 PCs.
An open source OS written in assembly.
Complete, Fast, Accurate, Game Boy/CGB/SGB Emulator.