Advanced Task Killer - This tool is also known as ATK. It is a tool to kill applications running.
Flashlight - Control your Mac with a keystroke.
tuPoz - Click-and-Kill. Kill & delete rogue processes in a single click.
Tiny Flashlight + LED - Tiny Flashlight + LED is free to use application that can be used anywhere else, having nicely built-in functionality.
Restart Me - ReStartMe is designed to do one thing, and that is to restart processes.
Screen Torch Advanced 2 - "Screen Torch Advanced 2", is an handy torch program. It only uses devices' backlight.