Google hangout is an instant messaging and video chat platform developed by Google, which is launched on may 15,2013. In hangout the user can hold the conversation between two or more users.
Hangout uses proprietary protocol instead of XMPP protocol. The proprietary protocol is owned by single organization. XMPP protocol is open source protocol. Photos can be shared during the conversation and are automatically updated to Google+ album. In this the user can also perform agroup video chat with up to 10 users at a time. Users can also use emoji symbols in their messages. Emoji means smileys in Japanese term.