Hyper - Extensible, cross-platform terminal built on open web standards.
Simply Piano - Fast and fun way to learn piano
iTerm2 - A terminal emulator for macOS that does amazing things.
Melodics - Melodics is a desktop app that teaches you to play MIDI keyboards, pad controllers, and drums.
GEEKtyper - Code like in the movies
Yousician - Learn to play music at home, at your own pace