Simple Flashlight - A clean flashlight with an extra bright display and customizable stroboscope.
Tiny Flashlight + LED - Tiny Flashlight + LED is free to use application that can be used anywhere else, having nicely built-in functionality.
Torchie - Touch to Torch
Flashlight - Control your Mac with a keystroke.
Screen Torch Advanced 2 - "Screen Torch Advanced 2", is an handy torch program. It only uses devices' backlight.
An Light - A simple flashlight application, include flashlight, stroboscope, SOS, screen flashlight, morse code.