Spectro - Spectro is a freeware audio file analyzer for windows.
Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.
Lossless Audio Checker - A utility to check whether an audio file is truly lossless or not.
Spear - Product Hunt Command Line Interface
sndpeek - a real-time audio visualization tool (animated, 3D)
Studio One - Studio One raises the bar for music production software. Developed by PreSonus, this platform has been used by both professional and amateur artists to make live and studio recordings.