Audio server, programming language, and IDE for sound synthesis
PC based Oscilloscope and Spectrum analyzer using sound card
Imaging application for GNUstep and MacOS
Strobe Tuner for Windows
media player focused on GPU acceleration
Audio high performance tempo tracking
Virtual Sound Level Meter for analyzing calibrated sound files
A generalization of Conway's Game of Life
A digital signal processing (DSP) framework (w/ audio to midi focus)