Open Source C++ MIDI Software
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C++ MIDI Software
View 115 business solutionsBrowse free open source C++ MIDI Software and projects below. Use the toggles on the left to filter open source C++ MIDI Software by OS, license, language, programming language, and project status.
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Hydrogen
An advanced drum machine with pattern-based programming
Hydrogen is an advanced drum machine for GNU/Linux, Windows and Mac OS X. It's main goal is to bring professional yet simple and intuitive pattern-based drum programming. -
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Fx FloorBoard
Graphical editor software for many Boss and Roland effect & synth unit
Editors for the BOSS GT-1, 3, 5, 6, 8, Pro, 10, 100, 001 Guitar Multi-Effects Processors, and the BOSS GT-1B,6B,10B Bass Multi-Effects Processors. And for the Katana Amplifier. and various Boss and Roland guitar synths. This software can visually edit parameters via Midi,USB, or Bluetooth(via external device on some units) on the Multi-Effects/Amp/Synth Processor. -
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GrandOrgue
Virtual Pipe Organ Software
Official development of GrandOrgue has moved to GitHub, please visit https://github.com/GrandOrgue/grandorgue that is our new home! GrandOrgue is a sample based pipe organ simulator. When connected to MIDI keyboards and an audio system, it can accurately simulate the sound of a real pipe organ. This application has builds for Linux, Windows and OS X. -
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Qtractor
An Audio/MIDI multi-track sequencer
Qtractor is an Audio/MIDI multi-track sequencer application written in C++ around the Qt framework. The target platform will be Linux, where the Jack Audio Connection Kit (JACK) for audio, and the Advanced Linux Sound Architecture (ALSA) for MIDI, -
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midi editing software for use with the Roland GR-55 and Boss SY-300 and GP-10 guitar synthesizer, to allow graphical representation of the internal settings and parameters of the GR-55. Realtime editing and patch data backups, bulk patch editing.
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A multi-platform software synthesiser emulating (somewhat inaccurately) pre-GM MIDI devices such as the Roland MT-32, CM-32L, CM-64 and LAPC-I. In no way endorsed by or affiliated with Roland Corp. Source hosted at: http://www.github.com/munt/
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Virtual MIDI Piano Keyboard
Virtual MIDI controller for Linux, Windows and OSX
VMPK is a virtual MIDI piano keyboard for Linux, Windows and OSX. Based on Qt and Drumstick the program is a MIDI event generator using the computer's alphanumeric keyboard and the mouse. It may be used also to display received MIDI notes. -
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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. Git repository: https://github.com/ariamaestosa/ariamaestosa
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The Pure Data (short Pd) project on SourceForge unifies the extensions (or externals) written for the Pure Data Graphical Computer Music System written by Miller Puckette with contributions from many others.
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MuseScore
Free music notation & composition software
MuseScore is a free and open-source music notation software designed for composers, arrangers, educators, and musicians of all levels. It allows users to write, edit, and print professional-quality sheet music with no limitations or subscription fees. MuseScore Studio supports a wide range of instruments and ensembles, from solo piano and guitar to full orchestras and choirs. The software is easy to learn while still offering powerful tools for advanced notation and score layout. With support for MIDI input and formats like MusicXML and MIDI, MuseScore integrates smoothly with other music software and workflows. Built by a global open-source community, MuseScore continues to evolve through active development and community contributions. Support MuseScore at http://musescore.org/en/donate -
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midisport-macos
M-Audio MIDISPORT USB 64-bit MIDI device driver for MacOS v10.14+
This project provides an open source MacOS v10.14+ (Mojave and above) compatible CoreMIDI Universal 64 bit device driver for M-Audio's MIDISPORT range of USB MIDI interfaces. This driver supports the following devices: MIDISPORT 1x1 MIDISPORT 2x2 MIDISPORT 4x4 MIDISPORT 8x8/S Oxygen 8 Keyboard Other devices which are compatible may also work, although presently, these are the only ones which have been tested. -
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Piano Booster
Boost your Piano playing skills
A MIDI file player that teaches you how to play the piano. PianoBooster is a fun way of playing along with a musical accompaniment and at the same time learning the basics of reading musical notation. see: https://www.pianobooster.org/ -
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Patch editor for the Boss ME-25 guitar multi effects and Roland GR-20 guitar synthesizer. The software allows desktop tweaking and editing of the ME-25 internal parameters, making patches a lot easier to create.
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Psycle is a Music tracker (like FastTracker 2 or Impulse Tracker) combined with plugin modularity. It supports its own plugin API, the VST2 plugin standard, and a tracker style sampler playback.
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Rosegarden
MIDI sequencer for Linux with music notation and audio
The MIDI sequencer that features a rich understanding of music notation along with basic support for digital audio -
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MidiLayer
A simple and intuitive tool to improve live performances.
MidiLayer is a simple and easy to use application designed to enhance your live performances. Manage slots and channels, adjust the velocity and the volume, customize the note range and connect with modulation wheels and other types of controllers, all with the help of MidiLayer. -
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Open Metronome
MIDI and/or Custom WAV Metronome for Windows and Windows Mobile
Free open source GPL metronome (a "branch" of "Weird Metronome") for Windows, Windows Mobile, & Pocket PC. Uses user-definable multi-voice WAV or MIDI (PC only) sounds for the beats. Has a blinker & allows user defined bpm & fine measure control. -
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Midi router
Midi router
Midi router - anywhere to anywhere. Midi Router Client is an advanced, cross-platform tool designed to route and manipulate MIDI signals in real time. It allows users to create virtual MIDI ports, map MIDI events (e.g., CC to pitch wheel), monitor inputs, and build custom controls like program change dropdowns—all with minimal latency Documentation: https://shemeshg.github.io/MidiRouterClient-mdbook Github and support: https://github.com/shemeshg/MidiRouterClient step by step install: https://shemeshg.github.io/MidiRouterClient-mdbook/guide/installation.html ! Windows: Scoop installs are more reliable and update instantly, so Scoop is recommend. Winget is available but may lag behind. -
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drumkv1
An old-school drum-kit sampler
an old-school drum-kit sampler with stereo fx. -
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PortMedia was created to develop and share cross-platform, open-source I/O libraries for digital media including MIDI, video, and audio. Only a few things were released under the PortMedia umbrella. These are now hosted by the github.com/Portmidi/ project, where you can find the lastest versions of PortMidi, portsmf (Standard MIDI File support and more), and see github.com/rbdannenberg/scorealign for MIDI and/or Audio score alignment.
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samplv1
An old-school polyphonic sampler
samplv1 is an old-school all-digital polyphonic sampler synthesizer with stereo fx. -
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JD990 Super Editor
VERSION 3.7.1 released 4/25/2026
CtrlrX based editor for Roland SUPER JD SYNTHESIZER MODULE JD-990 -
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QXGEdit
Qt XG Editor
QXGEdit is a Qt GUI for editing MIDI System Exclusive files for XG devices (eg. Yamaha DB50XG). -
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Drumstick Multiplatform MIDI File Player
Multiplatform MIDI File Player for Linux, Windows, and macOS
Featured MIDI File Player for Linux, Windows, and macOS written in C++, and using Qt5 and Drumstick2. -
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A collection of graphical midi based editors, each made specifically for the Boss SY-1000 , Roland VG-99 guitar, or VB-99 bass synth units, which provide an alternative to the Boss/Roland version of midi editors, with full features and control of the SY-1000, VG-99, or VB-99 from a Windows, Mac, or Linux computer.
