Quick Settings put all the mostly used settings in one place for easy access instead of having to dig through the settings menu. I use it almost everyday, especially to adjust the screen brightness or turn on WiFi. It even has a flashlight app, which I have yet to use. It is highly customizable, allowing you to hide or replace settings you might or might not use. Place it on the desktop or dock bar or any place you can access it easily. A ‘must have’ app.
The developer doesn’t have a dedicated home page, but does have an active twitter feed.