Stave'n'Tabs - iOS and macOS notation and tablature editor with MIDI and MusicXML files support and chromatic...
Strapi - Strapi is the most advanced Node.
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!
Contentful - You don't need another CMS. You need a better way to manage content — unified, structured, and ready to deploy to any digital channel.
Aria Maestosa - Aria Maestosa is an open-source (GPL) midi tracker/editor.
DatoCMS - Connect DatoCMS to your favorite site generator, build the perfect backend and deploy anywhere you like.