Flashlight - Control your Mac with a keystroke.
NirCmd - NirCmd is a small utility that allows you to do many useful tasks from command-line, without displaying any user interface: change your display settings, turn off your monitor, open the door of your CD-ROM drive, and more...
Simple Flashlight - A clean flashlight with an extra bright display and customizable stroboscope.
Yad - Yad (yet another dialog) is a fork of Zenity with many improvements, such as custom buttons...
MEEFF - MEEFF – Make Global Friends app allows users to learn the Korean language and increase their knowledge about Korean culture by making friends from Korea and engaging in live chat with them.
Zenity - Zenity is a tool that allows you to display GTK dialog boxes in commandline and shell scripts.