Open Source C++ MIDI Software
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C++ MIDI Software
View 118 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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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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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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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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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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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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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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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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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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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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OpenPiano — Virtual Piano for Windows
Play and record piano with a keyboard, mouse, or MIDI controller.
OpenPiano turns your Windows computer into a playable piano. Use your computer keyboard, mouse or MIDI controller, choose a sound, and record an idea without leaving the app. This virtual piano includes Default and Grand Piano sounds. Add compatible SF2/SF3 SoundFonts (instrument sound files), or download the optional Steinway D-274 Hi-Fi piano. Choose 61 or 88 keys and customize key mappings, note labels, colors, sustain and pitch. Save performances as editable MIDI notes with recorded sustain-pedal events, or render WAV audio using the sound and volume selected at export. Playing and recording work locally without an account. Use the Windows installer or run standalone. No extra sound download is required to begin; settings and custom sounds stay in your Windows user profile. Updates and optional downloads use the internet. Website: https://www.justagwas.com/projects/openpiano/ Documentation: https://github.com/Justagwas/OpenPiano/wiki -
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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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Dexed
DX7 FM multi plaform/multi format plugin
Dexed is a free, open-source frequency modulation synthesizer closely modeled after the Yamaha DX7. It recreates the characteristic sound and programming architecture of the original hardware synthesizer. Musicians can design complex sounds using six-operator FM synthesis, including electric pianos, bells, basses, and evolving textures. The software operates as a synthesizer plugin across multiple platforms and digital audio workstations. It also functions as a companion to the original DX7 through compatible patch data and MIDI System Exclusive communication. Dexed supports modern capabilities such as microtuning, parameter automation, and scalable interface controls. Its emphasis on hardware compatibility makes it useful for music production, sound design, and preserving classic digital synthesis techniques. -
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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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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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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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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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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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Mixxx
Free DJ software: everything you need to perform live mixes
Mixxx is a free and open-source DJ software that enables DJs to create professional live mixes using digital music files. It runs on Windows, macOS, and Linux, making it accessible to DJs across all major platforms. Mixxx supports both beginners using just a laptop and experienced DJs using advanced hardware setups. Built-in BPM and key detection help DJs quickly find compatible tracks and achieve smooth transitions. With strong community-driven development, Mixxx is continuously improved by DJs and programmers from around the world. As a fully open-source project, Mixxx is and will always remain free to use. -
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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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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.
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JD990 Super Editor
VERSION 3.8.2 released 11/12/2026
CtrlrX based editor for Roland SUPER JD SYNTHESIZER MODULE JD-990 -
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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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samplv1
An old-school polyphonic sampler
samplv1 is an old-school all-digital polyphonic sampler synthesizer with stereo fx. -
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drumkv1
An old-school drum-kit sampler
an old-school drum-kit sampler with stereo fx.
