Nerve
Nerve is a cross platform scriptable debugger built using our Ragweed library. Nerve consumes your breakpoint configuration files and then executes the ruby scripts you specify as debugger events occur. Nerve scripts have been used to implement hit tracers, in memory fuzzers and code coverage tools. You can find detailed documentation on the Nerve GitHub Repo. Nerve includes our experimental exploitable? method that partially implements the popular !exploitable WinDBG extension functionality for categorizing application crashes.
Nerve works with Ruby 1.8.7 and 1.9.1 on 32 bit WinXP, Win7, Linux 2.6 and OSX 10.6
You can install Nerve by downloading the code on this page. We should have a gem ready soon.