Android: We've sung the praises of the Android Power Control widget on more than one occasion, but if you wish you could toggle even more settings right from your home screen, Power Widget Plus will probably let you do so.
The Power Control Plus widget adds a ton of other Android settings to your home screen: it includes the usual choices, like Wi-Fi, brightness, Bluetooth, but also adds things like a battery indicator, LED flashlight, haptic feedback, tethering and even input method (so you can change your keyboard with one home screen tap). In addition, you can arrange the widget however you want on the screen - vertically, horizontally, and taking up any number of grid spaces - and even change the colours of each individual setting (for really quick reference). If you're a fan of the Power Control widget, this app is a must-have. Check out the app's home page for a full list of compatible settings.
Power Control Plus is a $2.05 download for Android devices.