Creation of an attractive and compelling web app prototype is no small task, but a new startup called InVision offers a framework to do so that looks easy, fast and like a real pleasure to use.
The service lets designers drop image files into its web interface, then create clickable hot-spots on each page. The next page each spot links-to is chosen from a drop down menu of images uploaded and the end result is a stitched-together series of pages that can be shared publicly with a single URL and commented on. It looks really nice and is priced from free for a single small project through $75 per month for up to 25 simultaneous projects with unlimited collaborators. I saw one error in the account creation flow, but otherwise the service appears to work well as promised.
Article source: RRW http://feedproxy.google.com/~r/readwriteweb/~3/_L2KynJFFNo/invision_looks_like_a_web_designers_dream_come_tru.php