codebeat - Automated code review for Swift
Chordsheet Maker - Create chord sheets or lead sheets quick and easily from your iPad. Add rhythms, endings, segno, codas and all what's necessary for your musicians to know what's your music about. Transcription made easy!
CodeStream - CodeStream helps development teams resolve issues faster, and improve code quality by streamlining code reviews inside your IDE
Tonelib JAM - Create, edit, print and listen to tablature and guitar sheet music
Codacy - Automatically reviews code style, security, duplication, complexity, and coverage on every change while tracking code quality throughout your sprints.
Aria Maestosa - Aria Maestosa is an open-source (GPL) midi tracker/editor.