sdbg - extensible debugger for all your reversing needs
sdbg started out with the aim to create a debugger consists of separate and independent components. We expected it to end up as cross-platform, able to disassemble on a wide variety of machine and have powerful binary analysis and visualization capabilities.
But for the time being, we just wanted to come up with a simple r3 debugger that works on win32 platform.
Apparently we don't have anything to offer yet. If you are interested in our progress, please have a look at our svn repository.