This is the OpenTag Mainline Distribution. It is maintained by JP Norair, the creator of OpenTag and primary author of the DASH7 wireless specification.
Indigresso Wiki: http://www.indigresso.com/wiki/doku.php
Indigresso Forum: http://www.indigresso.com/forum/
Haystack Technologies: http://www.haystacktechnologies.com
OpenTag uses the OpenTag License, which is an open source license similar to ClearBSD, Analog Devices BSD, and some others. You can read about the OpenTag License on the Indigresso Wiki or on this GitHub project Wiki.