Moka
Moka is based on the idea that we can make brainstorming meetings more reliable and efficient, with no additional hardware required.
Basically, a smartphone application acts like a remote control for the main screen that's usually connected to a projector. Using the remote, the attendants of the meeting that are connected to the main server (either through NFC or manually) are able to add, edit and remove several types of objects such as images, videos, web pages, UML diagrams, post-its, etc. The objects that are added to the platform can be moved, resized or rotated and their content can be edited, all of these operations happening seamlessly in real-time on both the main screen and the other attendants' application (aka remote control).
Moka features several components:
You can grab further information (including a demo) on the website http://themokaproject.github.io/