Open source STM32 MCU programming toolset
The Open On-Chip Debugger
IDAP-Link/M Software
Tethered Forth for MSP430 Microcontrollers
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
Evaluation software for TI Delta-Sigma modulators
Superseded by http://www.ti.com/tool/msp430-gcc-opensource
C++ based debug interface to MSP430, MSP-FET430UIF needed
2wiglet - JTAG wiggler tool for 2Wire routers
Universal programmer/debugger. Universal embedded software framework.