Works great - very useful
Tune Sweeper - Show duplicates in your Music library. Automatically select which duplicates to keep and delete based on your preferences. Remove duplicates with one-click from your iTunes or Music app library.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
SongGenie - SongGenie analyzes, identifies and repairs your mp3 tags and names.
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
Leawo Tunes Cleaner - Leawo Tunes Cleaner is a powerful iTunes cleanup tool, which can help you to delete duplicates in iTunes and get album artwork for iTunes music files.With it,you can clean up iTunes music library fast and comprehensively.
AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode