Jean-François Bouzereau is currently porting Apophysis to a Java application.
It’s really interesting for everyone with a linux or mac machine.

Take a look here: http://membres.lycos.fr/jfbouzereau/apophysis.html

Current change-log

04-mar-2008
Several bug fixes. Support of all the adjust options.

02-mar-2008
All settings available in the options panel.

29-feb-2008
All the variations of the original version are supported.

27-feb-2008
This is a very first and crude version with lot of features missing. No graphical editing, no scripts, no options, no preview, no undo. But you can already create your own flames and render them.