Voxer - Turn your phone into a Walkie Talkie. Don't waste time on phone calls and voicemails.
MinglePic - Share your event photos with everyone at the party
NextPlane - NextPlane offers cloud-based, scalable unified communications federation service for the enterprise.
The Bosco - High tech photo-boothing for any event
Sameroom - Chat interoperability-as-a-service
IncrediBooth Video - The photo booth app that creates video photo strips!