Flow control tracer/debugger for OSX; provides a complete trace of all instructions executed by a process. Perfect if you want to know exactly what a process did/does
An old piece of work to reverse engineer the Mac OSX user/kernel audio interface. Shows how to read audio straight out of the kernel as you would on Darwin (where most the OSX goodness is missing)
A write once, read many filesystem OSX kext. It uses the security policy module support within xnu; hooking filesystem operations to provide WORM functionality based on an extended attribute.