music21 vs Notation Composer
| music21 | Notation Composer | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | $198.99/mo |
| Open source | No | No |
| Platforms | Web, Windows, macOS, Linux | Windows, macOS, Linux |
| Free plan | Yes | No |
| Deployment | both | desktop |
| MusicXML support | Yes | Yes |
| MIDI support | Yes | Yes |
| Parts extraction | Yes | Yes |
| Tablature support | Yes | — |
| Collaboration features | — | Yes |
Both are listed in Best Music Notation Software. On Specifiction, music21 scores higher on our published basis.