Lossless Audio Checker - A utility to check whether an audio file is truly lossless or not.
Jokosher - Jokosher is a simple and powerful multi-track studio.
Spek - Spek helps to analyse your audio files by showing their spectrogram.
DSP-Quattro - DSP-Quattro
REW - REW is free room acoustics analysis software for measuring and analysing room and loudspeaker...
Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.