Apophysis!

Electric Sheep is a collaborative abstract artwork founded by Scott Draves. It's run by thousands of people all over the world, and can be installed on any ordinary PC or Mac. When these computers "sleep", the Electric Sheep comes on and the computers communicate with each other by the internet to share the work of creating morphing abstract animations known as "sheep". The result is a collective "android dream", an homage to Philip K. Dick's novel Do Androids Dream of Electric Sheep. »

XaoS is an interactive fractal zoomer. It allows the user to continuously zoom in or out of a fractal in a fluid, continuous motion. This capability makes XaoS great for exploring fractals, and it’s fun!

Qosmic is graphical interface for creating, editing, and rendering flam3 fractal images. The electricsheep screen saver has been gaining popularity, and Qosmic was developed to provide a Qt interface for people interested in creating and contributing sheep.

"Oxidizer is a free open source fractal flame editor for the Apple Macintosh, running OSX 10.4 or greater."

Windows 95/98/NT fractal generation and exploration program with 3D, network, animation, 24 bit support, compatible to FractInt, compatible to UltraFractal (excluding UF class based formulas).

Chaoscope is a 3D strange attractors rendering software. The word "Chaoscope" was invented by Ralph Abraham to describe computer tools used to help comprehending dynamic systems, a superset of the strange attractors.

Flames are algorithmically generated images and animations. The software was originally written in 1992 and released as open source, aka free software. Over the years it has been greatly expanded, and is now widely used to create art and special effects. The shape and color of each image is specified by a long string of numbers - a genetic code of sorts.

Sterling 2 is build on the grounds of Sterling, a fractal-generating commerial program written in 1999.

The Fractal Science Kit fractal generator supports hundreds of built-infractal types including: Mandelbrot, Julia, Mandelbar, Cubic, Lambda,Phoenix, Tetrate, Newton, Halley, Nova, Barnsley, Magnet, as well as studiesin convergent fractals, polynomial fractals, root-finding method basedfractals, Julia maps, fractals based on trigonometric and hyperbolicfunctions, and fractals based on exponential formulas. Additional fractaltypes include: Sierpinski Triangle, IFS, Strange Attractors, Rep-N Tiles,Symmetric Icons, Symmetric Attractors, Frieze Group Attractors, WallpaperGroup Attractors, Hyperbolic Attractors, Apollonian Gasket, CircleInversion, Mobius Dragon IFS, Mobius Patterns, Grand Julian IFS, EllipticSplits IFS, Schottky Group, Kleinian Group, and L-System. »

Ultra Fractal is a fractal generation and rendering software application. The program works using a similar paradigm to Photoshop, allowing multiple layers to be combined using layer blending modes, transformations and custom fractal formulas.Fractal formulas, coloring algorithms and transformations may be written by users and a large number of such formula files are available in a public formula database. Fractals may be copied from the interface and pasted as plain text into an email, there is a busy mailing list on which many users post their parameter sets.Calculation using arbitrary precision arithmetic is supported, allowing users to zoom to a magnification of 104000.The GUI is customizable with a dockable MDI. The software calculates statistics about the fractal that is being previewed. Other features include fullscreen mode, color cycling, a render queue, distributed rendering calculations and a detailed help file. Version 4 added support for animations and improved flame fractal rendering.UltraFractal is commercial software, but an evaluation version is freely available. The unregistered version creates watermarked renders.The Fractint formulae were converted to an UltraFractal formula file. »