'Portable WinAVR' , a version that doesn't require an install
Embedded Port Pins Library
Simple Embedded Operating System
BitBurner AVR Programmer, a full and complete AVRdude GUI for Windows.
Create and edit fonts for embedded system (AVR/ARM)
This is the AVR port of LLVM.
AVR driver for driving PCD8544 based 84x48 dot-matrix displays.
Atmel AVR universal bootloader with flash CRC
Utilizes digitalWriteFast() function for I/O pins.
Ethernet stack implementation (currently based on the ENC28J60)
Serial modbus RTU with 16DI 16 DO
Pic avr memory programmer and logic analiser
Microcontroller Task Scheduler
Ada compiler support for TI MSP430 processors
AVR ambilight project