ChordIQ - Learn notes, chords, sight reading, perfect pitch and more.
Uberchord Guitar - Get better on your guitar. Fast.
play-scales - learn and play scales and chords progressions
Swell.is - Customizable, API-first ecommerce platform for innovative brands, startups, and agencies.
Chorus - Chorus.ai records, transcribes and analyzes sales conversations in real-time making coaching conversations more efficient.
Riffstation - The web version is Free and you can learn how to play Chords with Youtube Songs.