FlickrViewer is a small application that allows you to view a Flickr photo set in SimpleViewer, a popular Flash photo viewing tool.
SETIState is a terminal based Perl/Curses application for tracking the progress of one or more SETI@home client(s). It is very simple and lightweight, meaning your machine can put all its effort into crunching those work units.
GUIs to record and edit sound files.
A shell that lets you restrict the user's environment to limited sets of commands.