Proctor is a tool for running unit tests for Python programs. It uses the standard unittest module, and provides a GUI and command line interface for finding and running all tests available in a package or set of packages.
Unit Test for C is a very useful and powerful software development tool for C and C++ programmers. It is designed to provide a great deal of functionality in a very small package and functions nearly identically on Windows and UNIX systems.
GBA Debugger for Mac OS X and GNUstep
JTAG base library, ARM7TDMI and MIPS debugger stubs for GDB. Extendable architecture to add JTAG device drivers, debuggers, and custom JTAG applications.
vMac is a free Open Source Macintosh emulator that is available for Linux/X-Windows, Win32, DOS, MacOS, and more.