Watch2Gether - Watch2Gether is an app that allows multiple people to watch the same content simultaneously and interact with each other while watching.
Bandlab - Capture, nurture, and collaborate on song ideas in the cloud
Rave - Rave is a free iOS and Android app where you can watch Netflix, Disney+, YouTube, Prime Video and more while chatting with friends in perfect sync. It's the ultimate virtual movie theatre!
Krue - Twitch for music: live streams from amazing musicians
Syncplay - Syncplay is a different kind of entertainment platform.
Soundscape - Sync your music with the open source community