Detour - Immersive audio walks, now in 17 cities
guitarLayers - guitarLayers is a professional macOS guitar learning software.
YourTour - Explore user-generated immersive audio tours via your phone
Fachords - Fachords is an online site that provides many resources that you can use to take your guitar skills to the next level.
Nexto - Replace boring audio guides with games & puzzles
TrueFire - The Best Guitar Lessons Online Fast. Easy. Fun.