Audio freeware plug-ins for Mac OS X and Windows

Buzz machines and free music software

Shareware by Richard Wardle

Makes Mac Termen, a software monophonic tone generator for MacOSX. Frequency and timbre color are driven by mouse position over the application main window.

an extremely simple to use Freeware Macintosh application, that uses Granular Synthesis to produce very diverse sounds based upon a sound file provided by the user, where you have NO CONTROL WHATSOEVER over the process.

Moppel's free VST plugin instruments and effects.

VSamp is a software sample player for the Macintosh. It comprises a program for creating and playing virtual instruments and a VST plugin for playing VSamp instruments from within a VST sequencer.

Makes iPhone/iPod/iPad apps

Mammut is a freeware that will FFT your sound in one single gigantic analysis (no windows). These spectral data, where the development in time is incorporated in mysterious ways, may then be transformed by different algorithms prior to resynthesis.

Environment Modules for Logic Pro