PCWash
Simply, safely and securely erase the secrets your computer is keeping about you, eliminate evidence of your online surfing activities, delete sensitive data, cover your tracks and regain your personal privacy with PCWash. PCWash erases/deletes index. ... dat, internet history, cookies, auto complete, recent files lists, browser cache, browser history logs, site addresses, Windows temporary files, cleans recycle bin, frees up valuable drive space and securely deletes and overwrites any file you selectively choose.
http://www.pcwash.com/pcwash.zip - 0b - Download - Screenshot

More Space
More Space will help you SAFELY free up valuable disk space by targeting those files that are large, obsolete or duplicated. This version includes a CRC checking algorithm that will make sure that the contents of all of your duplicate files are indeed the same. ... More Space does more than find duplicate files... ... tmp", *. ... Includes plenty of 3D disk statistics. ... old, *. ... A quick clean feature allows you to quickly identify files by extension for deletion such as '*. ... bak, etc. ... It includes a unique 'SAFE HARBOR' function that will keep you out of trouble by warning you...
http://members.aol.com/mystuff44/morespc.exe - 1Mb - Download - Screenshot

Privacy Keeper
Privacy Keeper is powerful privacy software to erase online Internet tracks and program activity. Privacy Keeper is a safe and easy-to-use privacy protection tool that securely deletes online Internet tracks and program activity records that are stored in your browser and other hidden files on... Bleaches free space and deleted files using Department of Defense standard (DoD 5220. ... Privacy Keeper restores valuable hard drive space and speeds up system performance by cleaning out old and unused temporary records.
http://www.pimasoft.com/downloads/privacykeeper/PrivacyKeeper7.exe - 662Kb - Download - Screenshot

Perfect Privacy
With Perfect Privacy you can easily eliminate your Internet and offline computer usage traces, such as history lists, address bar drop downs, cache, accessed document lists and other tracks that are stored to your computer as you use it. You can eliminate all traces or specify a selection. ... Cleaning this data improves system performance and frees up hard drive space. ... Perfect Privacy also removes temporary files and junk items. ... Cleanup can be done with a single click; it can be also executed automatically at specified intervals and on specified events.
http://www.blumentals.net/download/ppriv.exe - 956Kb - Download - Screenshot

MacWasher X
Webroot Software's MacWasher® X provides security on Macintosh OS X by allowing you to power-wash your activity history, protecting your privacy online and offline. Many people do not realize that the operating system and other software programs store information about what they have done, what... Furthermore, much of your activity information takes up valuable disk space, and recovering this space can be very beneficial to Mac system performance. ... If privacy and disk space are to be maintained, this process must be performed every time you use your computer.
http://www.webroot.com/download/trial/445/mwxsetup445.hqx - 4Mb - Download - Screenshot

More Space Sanitizer
More Space Sanitizer will help you SAFELY free up valuable disk space by targeting those files that are large, obsolete or duplicated. Additionally it will scrub the files that are being deleted so that no traces can be found. Files to be deleted are overwritten 9 times with various patterns. ... More Space does more than find duplicate files... ... A quick clean feature allows you to quickly identify files by extension for deletion such as '*. ... tmp", *. ... old, *. ... Includes plenty of 3D disk statistics.
http://edtrujillo.web.aplus.net/software/sanitizesetup.exe - 2Mb - Download - Screenshot

AntiSpy Pro
AntiSpy Pro is designed to clear the history of your activities on a PC. You can eliminate the traces of your work in Internet Explorer (IE), AOL, Netscape Navigator,Opera, Mozilla, Start Menu, Windows, Multimedia and Messenging programs, Common Controls and popular applications. ... You can scan drives for any types of files and clean free space which can contain any unerased information about your activities. ... AntiSpy Pro speed up your computer and Internet browser, reclaim lost hard disk space.
http://www.antispypro.com/antispy/antispypro.exe - 2Mb - Download - Screenshot

Webroot Window Washer
Award-winning Window Washer keeps getting better at cleaning away evidence of PC use and improving your system performance! Window Washer now features an entirely new interface and cleans more areas of your PC than ever before! Window Washer scrubs hundreds of programs, including Mozilla and... This enhanced version also cleans up hard disk free space to remove evidence of your deleted files. ... absolutely FREE. ... Novice users will appreciate the simple setup of Window Washer, while expert users can configure it to their precise needs with the numerous wash options available.
http://www.webroot.com/download/trial/445/wwsetup445.exe - 3Mb - Download - Screenshot

CleanDisk
Keep your hard disk free from unwanted junk files There exists many kinds of 'temporary' files that all have in common that they steadily increase in number and thus slowly eat up your hard disk space. Some programs use temporary files to hold intermediate data but do not delete them after... The problem is that if you don't clean up such files periodically, your free disk space will slowly but steadily shrink and it will be more difficult to find the files that you do want because of all the junk littering it.
http://www.fmjsoft.com/download/cdisk28.zip - 481Kb - Download - Screenshot

Duplicate files manager
Duplicate files manager help you find out and clean duplicate files,expand disk space and optimize disk. You could find files with same content , same file name or same size . And compare two folders,find out same files between two groups. It use some compare arithmethic to scan duplciate... After scan finish , I could generate a report of your files, report how much free space you could get. ... It could save scan result as job so that process it later.
http://www.qwerks.com/download/3313/dfm.exe - 2Mb - Download - Screenshot