Loop YouTube videos, and control how long you want to play a YouTube video for.
FacePause - Look away to pause YouTube videos
Heartbeat - Listen to music with your friends together, on Spotify
mps-youtube - Terminal based YouTube player and downloader
Liyo - Stream your favorite music live with friends 🎶
ListenOnRepeat - 24/7 curated music streams
TuneMeet - Chat with people who are listening to the same song