Hum - Songwriting for iPhone
ilo - Premium Twitter analytics
Songcraft.io - A platform for songwriters to write, organize & collaborate.
Tweetastic - Better Twitter analytics, scheduling and more
Horucco - Horucco is an cloud based app for musicians, songwriters, producers of every skill levelExplore chords and discover related chords on the fly.
Accountanalysis - A tool to evaluate Twitter accounts