Delete duplicate files
Clone Remover - software that deletes duplicate files.

www.moleskinsoft.com

Erase Dangerous Porn, History, Chat Get Free Trial, Excellent Support

CyberScrub.com/InternetCleanup

Clean Up Your Computer
Is your PC running slow? This free scan will fix your PC automatically

www.regtool.com
Wipe & Erase Freeware
Boot from CD/USB/Floppy & run Data Eraser & Free Disk Space Wiper

www.KillDisk.com
Fix windows.dll
Download 2007's Free Scan & Repair windows.dll in 2 mins!

www.faster-pc.net