Cymbal - Music discovery powered by friends
Dropbox Paper - A collaborative document-editing service
humit - A social networking app for music sharing and discovery.
Ghostnote - Add notes to anything.
Better Notes - Simple notes app that ties notes together with #hashtags
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.