From the JWildfire Programs
From the Xaos Program
The Xaos program allows you to navigate through various fractal set depictions while zooming and and out. It is available for free for Windows, Mac OS X, and Linux from sourceforge.net, fractalfoundation.org, and other sources. Written by Jan Hubička originally, it uses an incredibly fast algorithm for a real time experience of awesome graphic exploration.
From the Apophysis Programs
Probably the best known free fractal rendering program, despite the obscure name, Apophysis is a Windows (and Macintosh) program with some less successful Java versions that run on other OS platforms. It was written by numerous people, starting with Scott Draves, the inventor of Fractal Flames, which provides the basis for most fractal rendering programs. The official website is at www.apophysis.org,
From the Mandala Explorer Program
The child’s play approach for those of us who are computer challenged or unusually reluctant to try new things. Check it out!
From the Sterling2 Program
Sterling is a fractal generating program by Stephen C. Ferguson for Windows. Originally freeware, it is no longer free. Sterling2 is a freeware version released in 2008 by Tad Boniecki and available at soler7.com/Fractals/Sterling2.html. The Sterling programs display mathematical formulae in their menus, but the emphasis is on shading and color filters. The resulting images feature a striking richness of tone.
From the Mandelbulb Programs
And several versions and ports of each. These are probably the most sophisticated of the fractal generators, and they produce some of the most amazing images of the genre.