Real-Time Event Frameworks based on active objects & state machines
Real Time Tcp/Ip Stack Library
Real time preemptive embedded multi-thread kernel
The event based Real-Time Operating System (RTOS) for Arduino
PRTOS is a simple, compact preemptive RTOS for embedded systems
Windows XP reimplemented on Nintendo DS
High Speed Karlsruhe open automotive code initiative
X-RT: A portable multiprocessor real-time scheduling framework