LoudMax is a Look-Ahead Brickwall Loudness Maximizer Plugin with a clean transparent sound. It is designed to retain the original character of the music as much as possible even at high compression levels.
Make A TestTone is a generator of sinusoidal audio test signals. It calculates flexible, highly accurate signals that are saved to either SoundDesigner II, AIFF, WAV or Ensoniq Paris sound files. In addition it drops markers in the sound files, indicating the exact frequency or amplitude at that spot.
Makes VSamp, a cool 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.
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.