Metamaps.cc is a free and open source web platform for changemakers, innovators, educators and students. It enables individuals and communities to build and visualize their shared knowledge and unlock their collective intelligence.
Web: http://metamaps.cc/
Source code: https://github.com/Connoropolous/metamaps_gen002
Video tutorial: http://vimeo.com/88334167
Ishan Shapiro video: https://archive.org/details/IshanShapiro-Metamaps-5mof