318 has decided to open source our ASR Setup Tool under GPLv3. The tool can now be found at http://asrsetup.sourceforge.net. The ASR Setup Tool is built as a wrapper for the asr command line suite from Apple. The description from SourceForge:

Developed by 318 Inc., ASR Setup Toll is an application for setting up Apple Software Restore (“ASR”). In the context of the ASR Setup Tool, ASR is used for setting up a multicast stream that can then be leveraged for imaging Mac OS X computers.

We hope you enjoy!