Some fractals

Fractal Maker WARNING: can be addictive!

The following images are from Wikipedia, and have been released into public domain or under the license agreement stated.

Koch Snowflake:
Koch Snowflake

Sierpinski Triangle: licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. Attribution: Dino at en.wikipedia
Sierpinski Triangle

Sierpinski Carpet (click on carpet to see the progress)

Mandelbrot set:
http://en.wikipedia.org/wiki/Mandelbrot_set

Image of the Mandelbrot set with continuous coloring: created by Wolfgang Beyer with the program Ultra Fractal 3 and is free to be shown here under Creative Commons Attribution-Share Alike 3.0 Unported license
Image of the Mandelbrot Set with continuous coloring

Zooming in on the Mandelbrot Set: (click on the picture to start)
Zooming in on the Mandelbrot Set