Open Source Windows MIDI Software
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MIDI Software for Windows
View 79 business solutionsBrowse 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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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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TuxGuitar is a multitrack guitar tablature editor and player written in Java-SWT, It can open GuitarPro, PowerTab and TablEdit files.
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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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prodatum
patch editor for the E-MU Proteus 2000 synthesizer family
A cross-platform patch editor for the E-MU Proteus 2000 sample-based synthesizer family. prodatum is free software. -
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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. -
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JSynthLib is a universal MIDI synthesizer librarian / editor. The project aims to eventually support all existing synthesizers.
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MidiQuickFix allows you to directly edit the events in a Midi file. It is intended to make it easy to find and fix problems, such as setting volume and pan values for a track, without the need for a complex Midi sequencing program.
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Speedy MIDI is an editor designed for choirs and singers to quickly generate MIDI files for rehearsal.
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JD990 Super Editor
VERSION 3.6.5 released 3/12/2026
CtrlrX based editor for Roland SUPER JD SYNTHESIZER MODULE JD-990 -
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MiniakTools
Miniak Hacks!
A dumping ground for AKAI Miniak related sysex formats (program, rhythms, sequences), editors and tools. -
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A SoundFont editor and other software for editing, managing and sharing sample based MIDI instrument files for computer music composition. Support for other formats is planned.
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A free and open sourced patch editor for the Yamaha FB01 sound module.
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ABC is a text-based music notation language. This project aims to promote the ABC music notation language by providing cross-platform, open-source tools for manipulating, displaying and playing (via MIDI) ABC files. This project is here for historic reasons and there is not too much activity now. The abcmidi project is updated more frequently.
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abcmidi
abcmidi is a library of programs to handle abc music notation files
abcmidi contains a collection of command line utilities for working with abc music notation files. abc2midi converts an abc file into a midi file. abc2abc transposes the contents of an abc file to another key. midi2abc converts a midi file into an abc file. yaps renders the contents of an abc file into common music notation and records it into a PostScript file. mftext presents a textual representation of a midi file. midicopy changes the contents of a midi file and records it in a new midi file. abcmatch searches a database of abc files for certain musical patterns. -
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Geeboss is a Graphic Effect Editor for BOSS units (currently supports GT-8 guitar effect processor). Geeboss is written in Java (for Windows and Mac-OS support). It uses SWT as a graphic library and javax.sound.midi API to interact with BOSS effect units
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runabc
Runabc is a user interface supporting abc music notation software
Runabc is a graphic user interface to the abcMIDI, abc2svg and abcm2ps packages which normally run in a command window. In addition it contains numerous tools for editing and processing and analyzing abc and midi files. Runabc has been included in the sourceforge abc music project. It is now becoming a separate project on its own. -
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CTRLR panel for Waldorf Microwave XT
MIDI/Sysex editor for Waldorf Microwave II/XT/XTk
monstrumWaveXL or (mwaveXL) is a Lua based cross platform application which sends MIDI and sysex data to/from the Waldorf Microwave II/XT/XTk from either standalone mode or as a VST in your favorite DAW. This is not a software emulator of a Waldorf synth, it is an editor for the actual synth thus requires a Waldorf microwave (xt xtk or II) synthesizer. -
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Presto is a music notation program aimed at making it easy for a composer to rapidly convert a musical sketch (melody, counterpoint, harmonic support and bass) into a complete musical arrangement.
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AGS - Advanced Gtk+ Sequencer
audio sequencer
Advanced GTK+ Sequencer is intended to use for music composition. It features a piano roll, as well a synth, matrix editor, drum machine, soundfont2 player, mixer and an output panel. It's designed to be highly configurable, you may add effects to its effect chain, add or remove audio channels/pads. You may set up a fully functional network of engines, therefore exists a link editor for linking audio lines. In conjunction with ags you need a realtime kernel and alsa support. `ags` uses conditional locks to keep several threads in sync that's why you need at least a preemptible kernel. -
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Free Clef is a lightweight notation editor which allows you to quickly write your songs and export them to MusicXML format. It lets you distribute interactive sheet music online, and to use score files with a wide variety of music software.
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TSE3 is a powerful third generation open source MIDI sequencer engine written in C++. It is a 'sequencer engine' because it provides the actual driving force elements of a sequencer but provides no form of fancy interface.
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BUZZle means Buzz Logic Enhanced and has neither to to with Buzzle.com or the Buzzle-Game. BUZZle is a free (non-commercial) modular music composing and sequencing tool. It is a completely re-written version of the famous Jeskola Buzz.
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The MIDI Agent System (MAS) uses the interaction between different agents to generate MIDI notes. This software is designed for live use and it enables the performer to have real time control over very complex music.
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Polymeter
Polymeter MIDI sequencer
Polymeter is a MIDI sequencer for music that's in multiple prime meters (2, 3, 5, 7, 11, etc.) simultaneously. Each track has its own loop length, and when the lengths differ, the tracks "slip" (or shift phase) relative to each other. The resulting interference pattern is sufficiently intricate that variations similar to the embellishments of a live performer can be generated algorithmically. The current project is based on software I developed in the 1990s in order to compose polymeter-based electronic dance music. I'm rescuing from bit rot what might be (for all I know) the world's only sequencer optimized for polymeter. It's a long battle, but it's worth it to be able to compose complex polymeter again.
