Developed by Kayvon Beykpour and Joe Bernstein, the Periscope app took the tech market by such a storm when it was released that Twitter bought the start-up for a whopping $100 million in the month of March this year. The video streaming app that is also available for Android users, allows you to broadcast your live video globally. Going live will notify your followers in a matter of an instant, and it will trigger a series of likes, comments, and hearts.