FaceCat - Chat anonymously with your friends
Flashlight - Control your Mac with a keystroke.
Power Toggles - An advanced power control widget for both your homescreen and notification panel. Free without ads.
Tiny Flashlight + LED - Tiny Flashlight + LED is free to use application that can be used anywhere else, having nicely built-in functionality.
Helium Hotspot - Powering the world's first peer-to-peer wireless network
Screen Torch Advanced 2 - "Screen Torch Advanced 2", is an handy torch program. It only uses devices' backlight.