Aftertouch
Figure
SoundGrail
keezy
Splice
MidSequer
Splice Beat Maker
G-Stomper Studio
Uberchord Guitar
Fretello
Justin Guitar
Guitar Pro 7
Fretuoso
Go PlayAlong Tab Player
Moosiko
Guitar Trainer
AftertouchI've been using Uberchord for a few years by now and it's just amazing. It's all about chords, rhythm and songs. This is no child's game, though, you actually learn how to play. The recognition works for most of my guitars and is borderline crazy, even showing me if I put a finger on the wrong fret. It won't let you just play anything and still pass. They have courses library (they call it learning path) and a pretty large catalog of popular songs. I wish they had solo training, but all in all, highly recommended.
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
Fretello - Duolingo for learning how to play guitar
SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
Justin Guitar - Over 750 completely free guitar lessons!
keezy - A colorful soundboard. Play with music.
Guitar Pro 7 - Create, play and share your tabs