Screen Alive is a simple application that easily and temporarily overrides your screen power settings so that the screen will not dim or shut off while Screen Alive is running
Lumos is fully customizable automatic backlight level changer developed as a complete replacement for stock HTC auto-backlight service. A wide range of HTC branded devices is supported starting from HTC Diamond/Touch Pro up to the current WM flagship HD2
PLToggle is a small app that toggles the display orientation back and forth to the rotation of your choice, without the need for the g-sensor.
The default installation includes the settings screen (available from your start menu), and the application itself, which is available via a long-hold of the call button
KeypadLedControl By default the keypad lights turn off after 10 seconds when the device comes out of standby. This little application keeps the light on while the display is on
Mobile ScreenTester is excellent for testing your PDA''s display to quickly find dead pixels. It is simple to use and it is also a very thin application and it is FREE!
AutoLight - HTC Topaz (Diamond 2) auto adjust backlight function is a good idea with a not very good implementation. It must be said to HTC excuse that the light sensor is very noisy, especially at low light conditions.
Some alternatives do exist but are not very good or are Compact Framework application (not a very good idea for background application)
SoftNest discoSTROBE - The most stupid Application in the world
This Application simulates a Disco Strobe with various speeds (including random) and random optional colors.
Now you can simulate a Disco with your device, just put your favorite dance music, turn on discoSTROBE and have fun.
FREE $19