An operating system based on the best Windows NT design principles
Universal server
Open source disk encryption with strong security for the Paranoid
A bleeding-edge, security-centric Arch-based Linux distribution.
The Open On-Chip Debugger
NES/Famicom emulator based on FCE Ultra.
a DOS TSR that emulates a floppy disk drive over ethernet
AO RTOS is small real time OS based on Active Object concurrency model
Transfer disks and disk images between the Apple II and the real world
Arduino Focuser, fully ASCOM complaint
Disk partitioning and data management for x86-compatible systems
Scanning Probe Microscopy Controller and Data Visualization Software
A microkernel-based multiserver operating system written from scratch.
8-bit home-made computer on Z80 CPU
Another Disk Operating System (DOS)
Message passing microkernel-based Operating System for ZX Spectrum +3e
RTOS for Secure, Safe and Real-Time Systems
Ping-Pong-like game in Assembly that works without OS
An operating system written in RTL
Ubuntu-based Linux Gaming OS