What is livestreaming?
Livestreaming is the transmission over the internet of video of a live event. Viewers can then watch a live event on their computer through media player software. Livestreaming tools include: UStream.tv, Justin.tv and Bambuser.
Facebook Live is an app within Facebook that allows users to instantly steam live video.
Periscope is a live video streaming app owned by Twitter. Users can stream live video and automate a Tweet with a link to the video. There is an option to save videos to view after the event.