gLabels is a lightweight program for creating labels and business cards for the Gnome desktop environment; designed to work with various laser/ink-jet peel-off label, business card sheets, etc.
TinkerTool is a graphical utility to change hidden Mac OS X settings, most notably turning off anti-aliasing, disabling the zooming rectangle in Finder, etc.
CLIP is a Clipper/XBase compatible compiler with initial support other xBase dialects; features support for international languages and character sets.
GNU ed is an openly developed and clean implementation of the POSIX line-oriented text editor; full-screen editors like GNU Emacs or GNU Moe have rendered ed mostly a novelty.
