MuseScore is an open source and free music notation software. For support, contribution, bug reports, visit MuseScore.org. Fork and make pull requests!

🎵 Music notation engraving library for MEI with MusicXML and Humdrum support and various toolkits (JavaScript, Python)

View and edit guitar tablature.

Guido project - music score layout engine - music description language

A C++ library for rendering, editing and playing back music scores.

C++ binding for MusicXML.

Aria Maestosa is a midi sequencer/editor. It lets you compose, edit and play midi files with a few clicks in a user-friendly interface offering score, keyboard, guitar, drum and controller views.

INScore - augmented interactive music scores

Canorus is a free cross-platform music score editor

Crop sheet music images fast! | 乐谱裁剪神器！| Programmed by Ji-Woon SIM (Tsinghua University), Concepted by Wenge CHEN (Xinghai Conservatory of Music) | 开发者：清华大学 沈智云（程序设计），星海音乐学院 陈文戈（思路构想）

A library for graphic/symbolic score editing

Staff detection for computer generated and handwritten scores

A program that converts musical notes stored in a text file into WAV files. I know this is not a good Git repository.

A simple API for Visual C++ that you can use it alongside Sleep() and Beep() Functions to play music notes.

Convert a MIDI file to a LilyPond file

A simple version of timeline panel for music notation softwares.

MuseScore is an open source and free music notation software. For support, contribution, bug reports, visit MuseScore.org. Fork and make pull requests!

MIDI File Printer music notation software