Airborn
Abstract
Zeplin
Mightytext
Apple iWork
ActiveWords
Google Docs
Pamela for Skype
Uberchord Guitar
Fretello
Justin Guitar
Guitar Pro 7
Fretuoso
Go PlayAlong Tab Player
Moosiko
Guitar Trainer
AirbornI'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.
Abstract - A secure, version-controlled hub for your design files
Fretello - Duolingo for learning how to play guitar
Zeplin - Collaboration app for UI designers & frontend developers
Justin Guitar - Over 750 completely free guitar lessons!
Mightytext - Send & Receive SMS Text Messages from your computer. Sync'd with your Android #
Guitar Pro 7 - Create, play and share your tabs