Real-Time Embedded Operating System
Nuttx is a real time embedded operating system (RTOS). Its goals are: (1) small footprint usable in deeply embedded, resource constrained environments, (2) fully scalable from tiny (8-bit) to moderate (32-bit), (3) standards compliance, (4) real time, and (5) totally open. Think "Tiny Linux".
Syllable Desktop is a complete operating system that is easy to use, powerful, lightweight and extraordinarily fast and responsive. It has its own kernel, filesystem, GUI and applications. Syllable Server is a matching small and efficient Linux server.
A small (and ugly) firework display i wrote in ASM for a competition... It actually came in shared first place :) It can run stand-alone as its own OS or in DOS or DOSBox (but not in ntvdm). Source also includes a python script i wrote for generating
MOS, the MANTIS Operating System, is a multi-threaded OS designed for resource-constrained sensor platforms. A simple C API enables MOS to provide simplified programming of wireless sensor nodes. MOS Supports TelosB, Mica2/Dot, and MicaZ motes.
Unix-like operating system for the TI-89 and TI-92+ graphing calculators.
Quantix is a microkernel operating system distribution based on the Mach kernel. Quantix uses the X windowing environment for a user interface.
This is going to be a new OSbased on the freebsd source.
XSystem Kernel Project - an object-oriented 32-bit protected-mode operating system for IA32-architecture.
DSLinux is a Linux port for the Nintendo DS game console.