Here I'll add direct links to as many good fractal programs as I can find. They're all free unless otherwise indicated, and all for Windows. Enjoy!

2D Fractal Programs:

3D Fractal Programs: (I have not yet ventured further than Mandelbulb 3D)

  • Mandelbulb 3D (Version 1.8.2 - 05 January 2013 - I always try to change the link as Jesse uploads updates, but please check that there isn't a newer version! =) )
    PS: Here is a new Beta version (1.8.6), for testing.