Open Source C MIDI Software

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.

TiMidity++ is an open source MIDI to WAVE converter and player.

Firmware loaders for M-Audio/Midiman USB MIDI and Audio devices

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.

Basic structure for Android development

Bristol is synth emulation package for a diverse range of vintage synthesisers, electric pianos and organs. The application consists of a multithreaded audio synthesizer and a user interface called brighton.

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.

A cross-platform patch editor for the E-MU Proteus 2000 sample-based synthesizer family. prodatum is free software.

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.

A featureful SID-music creation tool (tracker) for the Commodore 64. It includes many advanced effects and tools like keyboard-tracking, tempo-programs/funktempo, gateoff-table-pointers, filter-shift, SID-export, executable-export, MIDI/XM conversion and MIDI-input hardware, etc., etc. NOTE: I left SourceForge for reasons not ethical to mention here. You can find me and my further work at these locations: http://hermit.sidrip.com http://csdb.dk/scener/?id=18806 https://github.com/hermitsoft/

A SoundFont editor. *** NOTE: This project is superseded by Swami. ***

DSSI is an audio plugin API for software instruments (soft synths) and effects. It is based on the LADSPA plugin API, the ALSA sequencer event types, and OSC (Open Sound Control) communications with custom GUIs.

BackupBand is a music auto-arranger. It has a virtual drummer, bassist, and rhythm guitarist. These 3 "musicians" follow your chord changes live (as you play some MIDI instrument, such as a keyboard) and they play along with you in perfect time. It's like having a live rhythm section backing you up. The rhythm section knows how to play in 60 different styles such as Rock, Disco, HipHop, Heavy Metal, Reggae, Swing, various latin styles, etc. You can also create your own styles for them to play. The bassist plays a rickenbacker, fender precision, synth, and double (acoustic) bass. The guitarist plays a les paul, steel string, and nylon string. The drummer plays 6 kits. You can also create your own multi-sampled guitars, basses, and kits for them to play.

Petri-Foo is a fork of the Specimen Sampler project featuring modulation routing, assignable MIDI controllers, sample auto-preview, xfades, improved sample viewer/marks editor, and many other updates.

DOSMid is a real mode (16-bit) midi player for DOS. DOSMid supports a variety of MIDI synthesizers, and has very low hardware requirements.

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

WildMidi is a midi processing library and a midi player using the gus patch set.

Open source firmware for the original kit set DJTechTools Midifighter. This is NOT compatible with Midi Fighter Classic MK2, Midi Fighter 3D, Midi Fighter Twister, or Midi Fighter Pro

A command line midi player for ALSA. A simple ALSA sequencer client that as well as playing MIDI files has uses as a general purpose sequencer event source for the ALSA sequencer that can be directed to any sequencer client.

jack-keyboard is a virtual MIDI keyboard - a program that allows you to send JACK MIDI events (play ;-) using your PC keyboard. It's BSD-licensed. User interface is GTK-based.

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.

libTiMidity is a MIDI to WAVE converter library that uses Gravis Ultrasound-compatible patch files to generate digital audio data from General MIDI files. This library based on the TiMidity decoder from SDL_sound library.

LibSMF is a BSD-licensed C library for handling SMF ("*.mid") files. It transparently handles conversions between time and pulses, tempo map handling etc. The only dependencies are C compiler and glib. Full API documentation and examples are included. Note that the development has moved to https://github.com/nilsgey/libsmf.

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.

This project is to create an updated version of abc2midi, a tool to generate MIDI files from abc music notation. As well as improving the code, the intention is to integrate features from and improve compatibilty with the abc 2.2 standard.