Open source STM32 MCU programming toolset
The Open On-Chip Debugger
A family of Eclipse CDT extensions and tools for GNU ARM development.
IPDBG are free tools to debug intellectual properties (IP cores).
Timbre Imitation and Adaptation for Experimental Music Instruments
The GNU Toolchain for ADI's Blackfin and future processors
Superseded by http://www.ti.com/tool/msp430-gcc-opensource
C++ based debug interface to MSP430, MSP-FET430UIF needed
Universal programmer/debugger. Universal embedded software framework.
An in-application debug probe for ARM Cortex-M microcontrollers.