Google Hangout
It is feature of Google+. Hangout brings conversations to life with photos, emoji, and even group video calls for free. Connect with friends across computers, Android and Apple devices. The release date was May 2013. The features
  • Better Group conversations from share photos and emoji on lively conversations.
  • Make fun on video calls by turning one-on-one or group conversations into live face-to-face video calls with up to 10 people at once.
 

 

  GroupMe
It is a mobile group messaging app owned by Microsoft. It brings group text messaging to every mobile.
 

 

  iMessage
It works in Apple devices like iPod, iPad, MACs. It allows send messages, photos, videos, locations, and contacts within Apple devices. Through Siri application, speech is converted into text message.
 

 

  JaxtrSMS
It is application that allows free local and international mobile texting.