Thinksynth is a modular synthesizer. It uses the JACK Audio Connection Kit for sound input and output, and ALSA for MIDI processing. Instruments are created with .dsp files, which define a network of Thinksynth modules using a simple interpreted language. A collection of example .dsp files is available in the source distribution.
aubio is a library for audio labelling. Features include onset detection, silence detection, beat tracking, and pitch detection. The goal of this project is to provide automatic labelling features to other audio software projects. Functions can be used offline in sound editors and software samplers, or online in audio effects and virtual instruments.
orDrumbox is a fully-featured drum machine and audio sequencer that is pattern oriented, has an automatic composer, automatic sound assignations, custom drum kits, loop support, and the ability to import and export songs. Its main features are a pattern seqencer, a drumkit editor, a piano roll, a step sequencer, sound generation, soft synth, and the ability to import and export MIDI files and Wave files.
Tao is a software package for sound synthesis using physical models. It provides a virtual acoustic material constructed from masses and springs, which can be used as the basis for building quite complex virtual musical instruments. It comes with a synthesis language for creating and playing instruments and a C++ API for those who would like to use it as an object library.
Frocor, the F Resonating Objects Correlator, is a sound- graphics installation. It is based on some parallels between sounds and geometric objects, such as volume and size, frequency and color, etc. Changes of properties of a Frocor object will result in changes of both the graphics and the sound output.
FMS is a tool to create all kinds of sounds from scratch. You can play any sound (sine, triangular, vowels, etc.) with any property settings (frequency, volume, balance, sweep, etc.) and modulations thereof. It also features tools to save sounds, play .MUS music, graphically display sounds, and make real noise.
Patel is a small, primitive synthesizer project, designed for making "chiptune" style sounds, and targeted especially at old, low-power, or embedded hardware. Currently it is in the form of a simple prototype program, in the course of developing a synthesizer library. Although it is already largely functional, little work has been carried out on making it usable, and various features are still missing or uncertain.