guitarLayers - guitarLayers is a professional macOS guitar learning software.
Fachords - Fachords is an online site that provides many resources that you can use to take your guitar skills to the next level.
TrueFire - The Best Guitar Lessons Online Fast. Easy. Fun.
School Guitar - School Guitar offers you the opportunity to learn guitar skills by buying its interactive Learning Software that includes comprehensive lessons and guides to help you go beyond the beginner guitarist level.
CrazyStrum - CrazyStrum is a powerful app that allows you to learn new techniques to play your guitar in a better way than before.
Learn & Master - Learn & Master is an online website that offers various skills like Photography, Guitar, Ballroom Dance, Piano, Drums, and Painting.