Test Patterns -
This is a screen color testing applet
Test Patterns is a lightweight application that was designed in order to provide you with a simple means of checking and testing your display. it comes with a variety of built-in test for you to choose from.
Get the Test Patterns Java applet and take it for a test drive to see just how useful it can actually be when you'll need to calibrate a screen or test its performance!
A free and fun way to test your speakers and enjoy 3D sound at the same time.
Generates audio test signals, AIFF files
It generates Window's RIFF Wave Format audio files with stereo
Wav Test Tone is a wav file test tone generator utility.
It enables you change the look & feel of your desktop to whatever you want