Earlier this week Google announced new tools that aim to make it easier for content providers to share when they are streaming live video. The announcement includes the addition of an update to the Indexing API and the addition of structured data for livestreams.
Crowd.fm is an easy-to-use platform created to promote events online. It's been described by its founder Tekin Suleyman as "an amazing platform for getting events listed with a single click." The company provides the Crowd.fm API to provide developers integration options.