Registry Doctor
Registry Doctor is the easiest and most comprehensive way to keep your PC running smooth and error free. It works with all version of Windows - 95, 98, Me, NT4, 2000, and XP. 1. PRIVACY PROTECOR Privacy Protector protects your privacy by removing all the unwanted traces in your system. ... Registry Cleaner and Optimizer Registry cleaner cleans the windows Database Registry for invalid information such Invalid Fonts, Activex and COM Sections, invalid File Information, Auto-Run sections, DLL and Help sections for invalid entries.
http://www.optimizeyourpc.com/regdoctor/regdoc.zip - 1Mb - Download - Screenshot

PC Optimizer
PC Optimizer is the easiest and most comprehensive way to keep your PC run smooth and error free. It works with all version of Windows - 95, 98, Me, NT4, 2000, and XP. 1. PRIVACY PROTECOR Privacy Protector protects your privacy by removing all the unwanted traces in your system. ... Registry Cleaner and Optimizer Registry cleaner cleans the windows Database Registry for invalid information such as Invalid Fonts, Activex and COM Sections, invalid File Information, Auto-Run sections, DLL and Help sections for invalid entries.
http://www.optimizeyourpc.com/pcoptimizer/pcopt.zip - 2Mb - Download - Screenshot

Advanced System Optimizer
Advance System Optimizer is the easiest and most comprehensive way to keep your PC running smooth and error free. It works with all version of Windows - 95, 98, Me, NT4, 2000, and XP. 1. PRIVACY PROTECOR Privacy Protector protects your privacy by removing all the unwanted traces in your system. ... Registry Cleaner and Optimizer Registry cleaner cleans the windows Database Registry for invalid information such Invalid Fonts, Activex and COM Sections, invalid File Information, Auto-Run sections, DLL and Help sections for invalid entries.
http://www.systweak.net/download/aso.zip - 958Kb - Download - Screenshot

avast! Virus Cleaner
avast! Virus Cleaner is a free tool that will help you remove selected virus & worm infections from your computer - it doesn't replace antivirus program! When your computer gets infected by a virus or worm, the virus often schedule itself to be run automatically when you start your operating... Virus Cleaner can also deactivate the virus present in memory. ... Virus Cleaner comes - it will find and remove selected worms from your computer, as well as fix the registry and startup items to make sure your system will work correctly after the disinfection.
http://files.avast.com/files/eng/aswclnr.exe - 373Kb - Download - Screenshot

Registry Vaccine
Registry Vaccine - Registry Vaccine is a powerful Windows Registry Cleaner that is designed to fix Windows Errors, remove all registry inconsistencies and thus enhance the performance of your PC. After browsing the Internet... experiencing a few virus attacks... ... Benefits of Registry Vaccine include: Stabalize PC environment Prevent Identity theft Prevent most spyware and adware Deliver Registry Integrity Enhance PC Performance Reduce System Downtime Increase workstation productivity Lower the risk of Virus, Worms etc.
http://www.horizondatasys.com/file...stry_Vaccine_One_Time_Cleaner.zip - 418Kb - Download - Screenshot

Clean Registry
Software to backup, clean and compress registry. Make your computer run faster and with less errors or system halts. What is the registry? The registry is where your computer stores information about the configuration of your system and your programs so that the operating system (Windows) can... If your registry becomes infected with a virus or you have lost keys, it may require you to reinstall Windows. ... There are several reasons why you might need to clean your registry. ... Why would I need to clean my registry?
http://www.winenhance.com/crdemo.exe - 903Kb - Download - Screenshot

Reg Vaccine
Reg Vaccine - Registry Vaccine is a powerful Windows Registry Cleaner that is designed to fix Windows Errors, remove all registry inconsistencies and thus enhance the performance of your PC. After browsing the Internet... experiencing a few virus attacks... ... Benefits of Registry Vaccine include: Stabalize PC environment Prevent Identity theft Prevent most spyware and adware Deliver Registry Integrity Enhance PC Performance Reduce System Downtime Increase workstation productivity Lower the risk of Virus, Worms etc.
http://www.horizondatasys.com/downloads/RegVaccine_OneTime.exe - 427Kb - Download - Screenshot

Registry Cleaner - RegFix Mantra
With due course of time, Windows Registry gets effected due to newer software installations, uninstallation, Adwares, spywares, Trojans, viruses etc. These changes generate inconsistencies in the Windows registry. The inconsistencies may be of varied nature like Empty keys, false uninstall... Extremely effective Registry Cleaner designed to fix Windows Errors, remove all registry inconsistencies and enhance performance of your PC. ... It is highly advisable to take immense care with windows registry.
http://www.pcmantra.com/regfixmantra_trial.exe - 986Kb - Download - Screenshot

Advance System Optimizer
Advanced System Optimizer's system files backup and restore functions keep your critical files secure so that you can restore them if you suffer a system failure. You can back up your Windows registry and restore it if your registry is damaged by a virus attack, or by errors created while... The registry cleaner and fixer ensure that invalid information is removed from your Windows registry, so that it will never cause your computer to slow down or crash. ... By removing fragmentation, deleting unused entries, and compacting your registry, you can ensure that your operating system is...
http://www.soft2d.com/graphics_&_multimedia/video/files/asov2esell.exe - 9Mb - Download - Screenshot

RegFix Mantra
With due course of time, Windows Registry gets effected due to newer software installations, uninstallation, Adwares, spywares, Trojans, viruses etc. These changes generate inconsistencies in the Windows registry. The inconsistencies may be of varied nature like Empty keys, false uninstall... Extremely effective Registry Cleaner designed to fix Windows Errors, remove all registry inconsistencies and enhance performance of your PC. ... It is highly advisable to take immense care with windows registry.
http://testrunsoftware.com/regfixmantra_setup.exe - 986Kb - Download - Screenshot