This java applet generates 4D fractals in quaternions julia set. The rendering is achieved by slicing the fractal computation into 3D.
It features 3 raytraced lightsources plus antialiasing. It uses fast computation algorithms for speed gain. Some fractals are computed in a *modified* quaternionic julia sets, so don't be surprised about the final rendered picture.

IMPORTANT: Don't forget to close the fractal window to see the other applets on the site. Letting it run in background can dramatically slow down the other Java applets.