James Gleick’s CHAOS: The Software
Back in 1991 there was an Autodesk DOS program called James Gleick’s CHAOS: The Software., written by Josh Gordon, Rudy Rucker and John Walker. It allowed you to generate visual representations of a lot of Chaos Theory’s best math, and Rudy wrote most of the algorithms, except for John Walkers Fractal Landscapes algorithms. Rudy has now posted it online over at GitHub as a free open source download under the GNU license. It will run on pretty much anything that has DOSBox installed on it, which is itself free open source software that runs on Windows, Linux, MACs, Raspbian and more.