Amazing Slow Downer - !A slow down music software for Mac and Windows computers - Amazing Slow Downer
PaulStretch - This is a program for stretching the audio.
AudioRetoucher - AudioRetoucher is a tool for analyzing music, changing tempo and pitch in real time
Audioalter - Your online audio toolkit. A collection of easy-to-use web tools for all your audio files
AudioScrub - Slow down music, change the key, and loop
Sonic Visualiser - Sonic Visualiser is a program for viewing and analysing the contents of music audio files.