OBS Studio - Free and open source software for video recording and live streaming for Mac, Windows and Linux.
Metastream - Watch streaming media with friends
Switcher Studio - Switcher Studio lets you sync multiple iPhones and iPads to livestream and live-edit video from multiple camera angles. Stream directly to Facebook, YouTube, LinkedIn, and beyond.
Watch2Gether - Watch2Gether is an app that allows multiple people to watch the same content simultaneously and interact with each other while watching.
Cinamaker - Cinamaker is a feature-full multi-camera recording and lives editing software that lets top content creators change their production game and help them in making unique content for the users.
Kosmi - Digital Hangouts Reinvented