Genmenu is excellent!
genmenu should be a default install with any distribution that uses any of the supported window managers. The menus are nearly useless otherwise!
The only place I could wish for improvement is an option to save the answers as the text file for automated (cron-able or on logout) menu generation.
Thanks for increasing the usabilility of my favorite window manager so much!
I tested genmenu on my WindowMaker and the results are really good.
An open, cross-platform journaling program.
A scientific plotting package.