AMPLI.FI - Live online music community. Twitch for tunes.
MusicDB - MusicDB is a music manager, server and player that focus on music.
Krue - Twitch for music: live streams from amazing musicians
NodeJS Music Server - A stateless NodeJS app that leverages AWS S3 & serves music through a REST API
Soundscape - Sync your music with the open source community
Swing Music - Beautiful and fast music streaming server.