Espressif IoT Development Framework
Market leading real time kernel for 40+ microcontroller architectures
Real-Time Event Frameworks based on active objects & state machines
AO RTOS is small real time OS based on Active Object concurrency model
PEARL Compiler and Runtime System
HomeKit Accessory Development Kit (ADK)
The smallest header-only GUI library(4 KLOC) for all platforms
An analysis tool showing the structure of a C program
Free real-time operating system designed for microcontrollers
A simulator for Atmel's 8/16-bit AVR microcontrollers
A Development Framework for Coldfire
Project has been move to https://github.com/ciaa/Firmware