Mayax is a 32-bit hobby OS with windows style GUI.
A program that auto rotates the screen when the Thinkpad is rotated.
NexusOS is the "next step to future" os.
12.04 Lts JessBuntu Eye Candy O.S
UML 2 Statemachine for C++ is a development framework with DSL support
A 32-bit operating system based around social networking.
A remake of the classic game PacMan
Simple AVR OS
An advanced GUI system for FreeDOS
(H)uman (R)eadable and (M)achine (E)xecutable (S)pecification
PrimOS is a 32bit multi-task OS, which is still under development.