BottleRocket is a command-line interface for Unix systems to use the FireCracker kit. It is easy to use, has all of the major (non-gui) functionality of the Windows interface, is easy to call from scripts and the backend code is made to be easily linked into other programs.

The GtkX10 project to control X10 devices in a GUI.

Expositive resource for using Linux for home automation. Includes tutorials, software, and a forum.

A Company Site for Home Automation. Has informative and useful items regarding your home automation, home security, or home entertainment project.

A X10 MouseRemote for Linux.

Xtend is a X10 to UNIX controller.