Browse free open source MIDI software and projects for Windows below. Use the toggles on the left to filter open source MIDI software by OS, license, language, programming language, and project status.

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  • 1
    Hydrogen

    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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    Downloads: 1,559 This Week
    Last Update:
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  • 2
    Fx FloorBoard

    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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    Downloads: 682 This Week
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  • 3
    GrandOrgue

    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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    Downloads: 494 This Week
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  • 4
    Virtual MIDI Piano Keyboard

    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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    Downloads: 1,134 This Week
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  • 5
    Aria Maestosa
    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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    Downloads: 201 This Week
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  • 6
    Munt
    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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    Downloads: 170 This Week
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  • 7
    TiMidity++ is an open source MIDI to WAVE converter and player.
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    Downloads: 109 This Week
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  • 8
    FluidSynth

    FluidSynth

    A real-time SoundFont software synthesizer

    A real-time software synthesizer based on the SoundFont 2 specifications. It can be used for live audio synthesis of MIDI events or for rendering MIDI files to disk, using SoundFont instruments. It can also be embedded in other applications. This is not a application with a graphical user interface, however there are several GUI applications which utilize FluidSynth.
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    Downloads: 129 This Week
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  • 9
    Psycle Modular Music Creation Studio
    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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    Downloads: 78 This Week
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  • 10
    Pure Data Computer Music System
    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.
    Downloads: 67 This Week
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  • 11
    HuMidi

    HuMidi

    Play MIDI like a human in ROBLOX with automatic sustain pedals.

    HuMidi is a universal piano auto player for ROBLOX. It plays even the most generic MIDI file with great depth, thanks to the humanization and automatic sustain pedal generation algorithms. The pedals are generated with a thorough analysis of the MIDI data, adding more depth to your performance that no other MIDI players could! Personally have been tested in: - Visual Pianos - Starving Pianists - Digital Piano - Piano's Got Talent This tool is universal, as long as the piano in-game allows to be played on a keyboard.
    Downloads: 203 This Week
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  • 12
    -- archived --
    Downloads: 39 This Week
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  • 13
    MuseScore

    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
    Downloads: 36 This Week
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  • 14

    Frinika

    Free open source DAW, MIDI sequencer, software synthesizers

    Frinika is a free, complete music workstation software for Linux, Windows, Mac OSX and other operating systems running Java. It features sequencer, soft-synths, realtime effects and audio recording.
    Downloads: 33 This Week
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  • 15
    SoundHelix

    SoundHelix

    Versatile algorithmic random music generation software written in Java

    SoundHelix is a free versatile Java framework for algorithmic random music composition. SoundHelix can generate random songs, play them (for example, on any number of MIDI devices or MIDI-capable software synthesizers) and is highly customizable using XML configuration. SoundHelix also allows writing the generated music as MIDI files. SoundHelix produces music that is actually enjoyable to listen to.
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    Downloads: 28 This Week
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  • 16
    Drumstick Multiplatform MIDI File Player

    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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    Downloads: 107 This Week
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  • 17
    MidiLayer

    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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    Downloads: 28 This Week
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  • 18
    OpenPiano — Virtual Piano for Windows

    OpenPiano — Virtual Piano for Windows

    Desktop piano playable with a PC keyboard, mouse, or MIDI device.

    OpenPiano is a Windows desktop piano application that allows you to play, practice, and record music using your PC keyboard, mouse, or a MIDI device. It supports real-time playback using SoundFonts and provides on-screen piano layouts for visual feedback while playing. OpenPiano is designed to run entirely locally. It does not require accounts, cloud services, or an internet connection for core functionality. Project links: Website: https://www.justagwas.com/projects/openpiano GitHub: https://github.com/Justagwas/openpiano Documentation: https://github.com/Justagwas/openpiano/wiki The application is fully open source. All input handling, playback, and MIDI recording/export are performed on the user's machine. VirusTotal scan result: https://www.virustotal.com/gui/file/af5e09c7433d2786129a9541bf0cd1d3dd5ba5fa7ab88a92753975795f81fbce
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    Downloads: 88 This Week
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  • 19
    Jalmus is a free, open source music education software helping the musicians, especially pianists, to improve their sight-reading. You can train to read music with both exercises on notes or rhythms.
    Downloads: 10 This Week
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  • 20
    As a library of classes for generating and manipulating music and sound, jMusic provides a solid framework for computer assisted composition in Java. jMusic has a music data structure based upon note/sound events and methods for modifying and structu
    Downloads: 14 This Week
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  • 21
    JSynthLib is a universal MIDI synthesizer librarian / editor. The project aims to eventually support all existing synthesizers.
    Downloads: 15 This Week
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  • 22
    TiMidity++ Windows Synthesizer (TWSYNTH) extended TiMidity++ to read midi inputs. CAUTION !! TWSYNTH proj. is obsolute. TWSYNTH sources are sucessfully included Timidity++. see http://sourceforge.net/projects/timidity
    Downloads: 18 This Week
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  • 23
    DGuitar is a Guitar Pro (*.GP4,*.GP3,GTP) viewer and player that works under Linux, MacOs, Solaris, BSD, Windows, or any other operating system with Java Runtime 1.4.X. http://DGuitar.sourceforge.net If you are a JAVA developer visit this page https://bitbucket.org/mauriciograciag/dguitar/overview
    Downloads: 10 This Week
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  • 24
    Speedy MIDI
    Speedy MIDI is an editor designed for choirs and singers to quickly generate MIDI files for rehearsal.
    Downloads: 5 This Week
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  • 25
    NoteTrainer PRO

    NoteTrainer PRO

    Trains quickly score reading and piano playing (MIDI-keyboard)

    The main purpose of NoteTrainer PRO is developing the ability of quickly reading and playing notes "at sight." The program generates a random sequence of notes in the range selected by the user, and controls the speed and accuracy of their playing. Instead of random notes can be loaded not very complex melodies in MusicXML format and practice by studying them. Input the notes possible not only with MIDI-keyboard, but from the PC-keyboard, as well as using the virtual keyboard.
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    Downloads: 11 This Week
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