The Antipasto Arduino IDE is a fork from the original Arduino IDE at:
This git repository contains the source for the IDE. If you just want to work with the [Arduino], [TouchShield], or [Illuminato X Machina], you can download this IDE as a binary for Windows, Mac OSX, and Linux at:
Required packages: apache-ant, java-1.6, doxygen, git
The IDE is best built using the built-in ant scripts. Running:
ant dist.all
will build the IDE for your current OS (Windows, OSX, Linux). To run the IDE:
ant run.all
The IDE is discussed here on github, on the Antipasto Hardware Blog, and sometimes on the Illuminato X Machina Mailing List.