Gravity Sketch for iPad - Easy 3D sketching for design and ideation
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.
Spline - Design tool for 3d web experiences
Gitarrero Beginner - Gitarrero Beginner is a multi-featured, and easy-to-use guitar school developed as a guide to help you learn guitar skills and play them comfortably.