8tracks
Music Sharing Community with Mixer Tools to create own Tracks and Music Pool for Playlists …
audiotool.com
Free Online Music Mixing Software, Collaboration and Sharing Tool …
Bandlab
Online Mixing and Recording Studio for colloborative composing. Bandlab offers virtual Instruments, Sounds, Loops and Cloud Storage …
Kompoz
Online Music Collaboration Platform for Composing and Collaboration, Recording and Upload …
NINJAM
Music Collaboration Software, making Music together over the Internet …
Soundation
Online Music Studio for Recording, Mixing and Sharing of Music …
Splice
Music Community for Listening and Music Collaboration and Remixing …
Wolfram Tones
Music Generator, Online Tool to make Music by Wolfram Research …