When looking earlier this month, I had dug up this: http://en.wikipedia.org/wiki/GDB GUIs: http://www.gnu.org/software/ddd/ - screenshots 1/3 down page Redhats funded version http://sources.redhat.com/insight/ http://sources.redhat.com/insight/screenshots.php also check their Links page: http://sources.redhat.com/insight/links.php john mitchell