Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.
Spectro - Spectro is a freeware audio file analyzer for windows.
Reaper - Reaper is a focused digital audio workstation (DAW) developed by Cockos. In the creation of the software, the digital audio technology company intended to make audio editing accessible to the masses.
Friture - Friture is a program designed to analyze audio input in real-time.
GarageBand - GarageBand is a fully equipped music creation studio for Mac
Lossless Audio Checker - A utility to check whether an audio file is truly lossless or not.