Open Source C++ Sound Synthesis Software for Windows

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.

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

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.

AudioBoard is an audio processing application based on the The Synthesis ToolKit in C++ (STK) open source project. It features a native Windows API based GUI to enable easy audio effects chaining and processing of real-time and pre-recorded audio.

Graoumf Tracker 2 is a soundtracker for Windows, sequel of the famous Graoumf Tracker for Atari Falcon. It is a integrated music sequencer and advanced sampler, including inovative features. Coded in C++.

LMMS is a free cross-platform software which allows you to produce music with your computer. This covers creating melodies and beats, synthesizing and mixing sounds and arranging samples. You can have fun with your MIDI keyboard and much more – all in a user-friendly and modern interface. Furthermore LMMS comes with many ready-to-use instrument and effect plugins, presets and samples.

MC (Music Composer) will be a full digital home studio. It has a step-sequencer/piano roll, sampler, sound/midi recording/editing, full automation and full VST, LADSPA, JACK, REWIRE support (client+host). Includes top-notch VST plugins (the DGSS, Rev3D..)

A XFig based rapid prototype yeilding an audio speed alteration tool. This tool lets you arbitrarily alter the speed of audio files. It uses the WSOLA algorithm for audio speed alteration without pitch change.

Nusq is a cross-platform modular music sequencer, intended to be sufficiently expandable, flexible and configurable for the technically-minded musician while still being accessible to the rest of us.

VST Preset Generator has moved to http://vst-preset-generator.org

Wired aims to be a professional music production and creation software running on the Linux operating system. It brings musicians a complete studio environment to compose and record music without requiring expensive hardware.