Real-Time Event Frameworks based on active objects & state machines
AO RTOS is small real time OS based on Active Object concurrency model
Thread Scheduler with custom asynchronous messaging in VC++
Free cooperative operating system designed for microcontrollers
Free real-time operating system designed for microcontrollers
A Debug style tool for OS Free systems
Mulithreading Arduno library
Tiny operating system for running HCFSM-based systems