Oku - Track your book lists and get recs from your friends
Bandlab - Capture, nurture, and collaborate on song ideas in the cloud
Calm - Calm.com can help you reduce stress and increase calm.
AMPLI.FI - Live online music community. Twitch for tunes.
GoodBooks.io - Largest curated collection of 8,500+ book recommendations.
Krue - Twitch for music: live streams from amazing musicians