The PiGate software is FREE under the agreements contained in the GNU copyleft file. See these links:
http://www.gnu.org/copyleft/gpl.html — A complete description of your legal rights and responsibilities
http://www.fsf.org — Free Software
http://www.opensource.org — Open Source
All the hardware pieces that are used to build a PiGate are covered under the warranty of their respective builders. PiGate.net assumes no responsibility for the safe and legal operation of the device.