TK10 is a Bottlerocket GUI for Linux. It is written in Tcl/Tk. TK10 is free software and is distributed under the GNU General Public License.
I wrote TK10 because I wanted a GUI application to control my X10 devices, and I wanted it to look and function like the HR12A controller that comes with the X10 Firecracker kit. If you are familiar with the HR12A then you will find TK10 very easy to use. The on/off/dim buttons, device letter dial, and device number range switch work just like in the HR12A. You can even edit the device labels! :)