Fretuoso - A fun game to learn the notes on the guitar fretboard
Fretello - Duolingo for learning how to play guitar
Justin Guitar - Over 750 completely free guitar lessons!
Moosiko - The Rosetta Stone for learning guitar
Ultimate Guitar Originals - Netflix for guitarists. Fingerstyle. Season 1 announcement 🎸
Uberchord Guitar - Get better on your guitar. Fast.