Useful Tools and Technologies

http://www.MicroCross.com C/C++ cross-compilers, linker, assembler, fully reentrant C Library, and graphical IDE
http://www.HCC-Embedded.com Flash File systems designed for Microcontrollers with minimal resources.
http://www.bell-labs.com MicroMonitor provides a firmware platform that can be used on a wide variety of different architectures.
http://PenguinPPC.org ROM Monitors for PowerPC