Our software was written from the ground up for commercial applications. It does not contain any code from Zoneminder.
A comparison is Zoneminder and Bluecherry's software can be found here:
What is Zoneminder?
Zoneminder is free open source security / recording application that is written to work with Video4Linux supported capture cards. While it does support network cameras it does not support audio and does not have a GUI interface. Zoneminder is community supported and commercial support / SLA is not available. It is also licensed GPL, which means we couldn't use any of the source code if we wanted to in a closed source application.