Amazing Slow Downer - !A slow down music software for Mac and Windows computers - Amazing Slow Downer
AudioRetoucher - AudioRetoucher is a tool for analyzing music, changing tempo and pitch in real time
Sonic Visualiser - Sonic Visualiser is a program for viewing and analysing the contents of music audio files.
Audioalter - Your online audio toolkit. A collection of easy-to-use web tools for all your audio files
Ashampoo® Soundstage Pro - Ashampoo Soundstage Pro processes all audio signals on your PC and alters them to simulate how they would sound on an actual surround system.
Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.