Roundio - Explore what people posted to Instagram or Flickr near you
DUSK - Anonymous live video
Circle.so - Bring together your discussions, memberships, and content. Integrate a thriving community wherever your audience is, all under your own brand.
SiN Episodes: Emergence - A first-person shooter video game.
MushRoom - KnockKnock the person whom you want to message and he/she should accept your knockRoom or Group can be created by providing a nameShare Room link with your friends to join the conversationWatch video or listen music during conversation
Periscope on Twitter for iOS - Stream live video inside your tweets