Duplicate Cleaner - Duplicate files may be wasting space on your computer, especially if you have large photo or music collections. Fortunately, you don't have to go hunting them down yourself.

This free program finds and deletes duplicate files in moments. It can even detect files that have the same information but different names.

Defraggler - You may have your files organized in tidy folders, but the underlying file system can still be messy. Parts of files can be scattered all over your computer, which makes your computer sluggish.

Windows has a built-in defragmenting tool to fix this, but it isn't exactly speedy. This program, on the other hand, defrags your drive quickly. Not only that, it can defragment specific files, so you can select ones you use frequently. Your computer can be running faster in seconds.