Social network hegemon Facebook has recently expanded its ranks by acquiring (for an undisclosed sum) one Beluga Inc., a small startup founded by three ex-Google employees which has developed a 'group messaging' app for both iOS and Android devices.
Beluga's software allows people to form private 'pods' of friends in which the participants can share updates, location info and photos, plan events, and basically stay in touch, all without worrying about text messaging fees. The app also provides real-time alerts using push notifications to ensure everyone is up-to-date with the latest happenings in the friend pods.
As expected, Facebook will utilize Beluga's knowledge and technology to improve on its own messaging system but that won't happen super fast so, for the time being, the Beluga mobile apps are still usable. They'll probably be retired in a few weeks.