I have built 3 going back to the late 1990's, 2 of them were for direct marketing companies, one was for an inbound call center. I don't have any links to shar

I have built 3 going back to the late 1990's, 2 of them were for direct marketing companies, one was for an inbound call center. I don't have any links to share that would help you in the terms of building a survey engine, sorry, but I will share a couple of things. A good survey engine is way more complex than most people realize. On the surface, survey engines seem pretty easy, ask a few questions and store the responses. But when you get into it, there are a lot of details, like branching strategies, rules, formatting, question types and a ton of other things to consider. For my company now, we actually just utilize survey monkey (white labeled), because it saved us a ton of time and headaches of managing survey's and building reports. In the end when we built them in the past, I'd say the reporting and analytics is equally as difficult as building the engine.