i know 4 business view add-ons:https://view3.com/http://enuerto.net/http://tourdash.com/https://www.tourmake.it/
I didnt use any of them, because they are paid on a yearly abonnement only. And i dont like abonnement for software, that is evil.
And i dont see business view as concurrent systems to autopano and panotour, i see both as a good supplement to the other. What can´t be done with apg/ptp, i´ll do with business view, and what business view can´t do, i´ll do with apg/ptp. In a way, they complete each other.
And yes, the idea that there might be something like "panotour pro for business view" that makes combinations of panotour and business view to look like one monolithic piece (oops, right word? Wie aus einem Guß / aus einem Stück) sounds great. I would be glad to be the first customer of such a software product.
greetings from germany