I sent you an email just now about updates to duet and activating since it doesn't seem to be on Envato's site any longer
It sounds like source code available for adding extras when purchased. What is this built in?
Yes, the source is available. It's built with php and javascript. It has an MVC architecture, but I didn't use any frameworks. It should be pretty simple to pick up if you're familiar with the concepts of MVC or you've worked with backbone in the past...
Oh wow. I've been looking for something like this. Amazing :)