CBI (http://www.cs.wisc.edu/cbi/) is an ongoing research effort to find and fix bugs in the real world. We distribute specially modified versions of popular open source software packages. These special versions monitor their own behavior while they run, and report back how they work (or how they fail to work) in the hands of real users like you. Even if you've never written a line of code in your life, you can help make things better for everyone simply by using our special bug-hunting packages.

We currently offer instrumented versions of Evolution, The GIMP, GNOME Panel, Gnumeric, Nautilus, Pidgin, Rhythmbox, and SPIM.