Pictometry (WAB 1.x - 2.2)
A widget that opens a link in a new window displaying your Pictometry at a location the user clicks on the map. It passes XY and authentication and works with internal ("EFS") viewers and the Pictometry Connect cloud site. In other words you can embed credentials.
Status: 1.2 beta 1, (Works in WAB 1.1-2.2) See Read Me. What's new in V 1.2 (July 9, 2015): works for sites in any projection (i.e. state plane etc)
Demo link ArcGIS Web Application
GitHub link to code: kevinsagis/Pictometry-for-WebApp-Builder · GitHub
Discussion: Pictometry and Streetview