Maelstrom

Maelstrom is the worlds finest particle-system screen saver for Windows. It uses a fully realized three-dimensional graphics engine to evolve a wide variety of themes over time, producing visual effects that are absolutely stunning.
The program includes twenty-two unique themes, and with its intuitive interface you can specify whether you want to see one or all of them. When active, Maelstrom randomly cycles through all selected themes, smoothly transitioning between them, often with breathtaking results. Furthermore, due to its integrated variety, you will never be watching the same patterns over and over.
Maelstrom also offers something that no other screen saver can match. Simply select a checkbox, and all themes will be rendered in anaglyphic 3D mode. When you wear a pair of 3D glasses (which are mailed to all registered users free of charge) the objects will literally leap off the screen.Limitations in the unregistered version5 days trial