Scribd Audiobooks - Unlimited access to 30,000 audiobooks
Parallel - Listen to music with friends over Spotify at the same time
BookPlayer - Player for your DRM-free audiobooks. Contribute to TortugaPower/BookPlayer development by creating an account on GitHub.
Slackbox - Spotify playlist collaboration through Slack
Channels by Audible - Follow handcrafted interest-based playlists.
Join My Playlist - Listen to music live together with your friends in Spotify.