Zen Patched Kernel Sources
Real-Time Embedded Frameworks based on active objects & state machines
QNAP GPL Source
amforth is an extendible interpreter on microcontrollers
Free cooperative operating system designed for microcontrollers
Free real-time operating system designed for microcontrollers
Open-source RTOS and Embedded Systems Toolkit for C++ and C
Small real time operating system for AVR and ARM microcontrollers
Embedded Real-Time Operating System (RTOS)
Smart home thermostat with touch screen and home automation