Apophysis 2.00 is free so is Sterling Ware. Mind Boggling Program, Fractalus, Flight From Fractals you'll find a lot of links on the Fractal link page http://www.apophysis.org/downloads.html copy and paste this link to get the final version of Apophysis 200 check out those who do use apophysis program also Fractal Explorer is also free Visions of Chaos also plus many more I personally think you'd enjoy Apophysis:) Good Luck