Google Page Creator - An easy to use web page creator. Free Engineering Online was made using GPC.

Google Page Creator Tips - Great websie if you're just getting started with GPC. It has some very good tips.

Electronics Lab - Get help with electronics  here. They also have a projects section with many hobbyists projects.

Physics Forums - Stuck on a homework problem or just curious about something? The folks down at PF will be glad to assist you. The community includes professionals in many fields including (but not limited to) Engineering and Physics.

OS Conflict - Great community. Discuss and debate technology related topics. Also get help with hardware and software issues.  

Science 101- A wealth of information. Areas include physics, electronics, and astronomy. Very good resource.

Physics FlashletsA collection of  physics flash animations.

Flash Animations for Physics

Physics Animations 

Linux Forums - Get help with almost anything to do with linux. They also have some great tutorials.

Button Generator  - Free Web button maker.

CiteSeer - Scientific Literature Digital Library.

MIT World - MIT World™ is a free and open site that provides on-demand video of significant public events at MIT.

Math, Physics, and Engineering Applets -  These are some educational java applets written to visualize various concepts in math, physics, and engineering. You should be able to view them with any Java-capable browser.

Quantum Soccer - In the game of Quantum Soccer, the aim is to shape the wave function of a quantum-mechanical “ball” so that the probability of it being inside one of the goals rises above a set threshold.

Physics Applets - Some good applets about topics in physics.

Through Einstein's Eyes - Visualization of Einstein's Theory of Special Relativity.

Physics Applets and Animations - Applets and shockwave animations used for teaching.