JSyn - modular synthesis API for Java.
JMSL - Java Music Specification Language
PortAudio - cross platform audio I/O API for 'C' is the home for various audio and music projects by Phil Burk and Mobileer Inc.

Latest News

7/18/14 JSyn V16.7.0 Released - A new version of the "Pure Java" JSyn has been released. Downloadable JAR and release notes here. This version includes spectral operators that use FFT..