Elemines is a minesweeper game clone using the Enlightenment Foundation Libraries.
Hnefatafl is an implementation of the Norse board game. Hnefatafl 11x11, 13x13, Tablut, and many other variants are supported using rulesets. There is a command-line interface and an X interface (the latter is optional).
A graphical shutdown utility.
An IDE for HTML, Bash, Perl, PHP, C, etc.