DuMP3 is a duplicate file finder.

DuMP3 is a general purpose duplicate and similar file finder. It finds exact duplicate binaries by hash, similar text files by substring content, images (JPG, BMP, GIF, PNG, etc) by color and audio files (MP3, WAV, OGG, etc) by wave data. It finds files by calculating a fingerprint based on the image, audio or
text data for each file and then comparing the fingerprints. Will mark all files that can not be read or decoded correctly as corrupt.

On July 10, 2009 updated, download size 11131Kb, for Unix, Java.

Disk defragmenter..

Vopt lets you quickly defrag and pack your disk drives to maintain optimal performance and reliability. Vopt`s speed makes daily defragging both practical and desirable. Vopt also provides tools to assist you in maintaining your system, reclaiming wasted disk space, and protecting your privacy.

Vopt offers many different lanquage choices to give you the comfort of working in your own native language.

On September 3, 2009 updated, download size 3700Kb, for Windows 98, 2000, XP, Vista, Windows 7.

Defragmentation for Windows PCs..

PerfectDisk 10 Home Edition`s fast and powerful defrag speeds up everything you do, from web browsing to downloading music and editing pictures. Plus, you`ll see faster computer boot times and fewer software crashes and hangs after just one defrag.

On October 10, 2009 updated, download size 43008Kb, for Windows 2000, XP, Vista, Windows 7, 64bit.