Smart PC Professional Demo
By a few easy steps you can make your PC run faster, cleaner and error-free with the help of a new award-winning tool - Smart PC Professional. The software fixes stubborn errors, cleans-up space-wasting junk and debris making your PC more efficient and reliable. ... Regular use of the software will keep your computer running smooth and error-free without system failures. ... Do you want to make your computer more powerful? ... Protect against Identity Theft Operations you perform with your computer are recorded and may be exposed to unauthorized disclosure without your knowledge.
http://www.smartpctools.com/files/smartprodemo.exe - 1Mb - Download - Screenshot

Spyware Remover
Spyware Remover scans your computer for hidden parasites and removes them permanently. Our advanced system cleaner works to repair and correct errors caused by ad and spywares and tweaks your PC for optimal performance. Annoying pop-up ads are blocked before they have a chance to bother you again.
http://urlcut.com/spywareremover.exe - 3Mb - Download - Screenshot

HS WinPerfect
Build on the core system of HS CleanDisk Pro , this software is windows system optimizer which cleans hard-disk and system registry, optimizes memory, tunes-up system specific settings, accelerates internet connection, improves cpu usage, maintains security and uninstalls software no longer wanted. ... * Removes duplicate files in the disks * Clean system registry from uninstalled software junks * Safe uninstall of selected software from your system. ... * Terminate unwanted multiple selected processes * Ability to remove applications start-up list to disable automatic execution of...
http://www.haysoft.com/files/winperfect1.exe - 2Mb - Download - Screenshot

PC Doctor by PCSecurityShield.com
Is your computer running slow? Does it crash? If so, then you have errors in your registry. Don' worry, PC DOCTOR is here to help. PC DOCTOR will scan your entire computer and remove errors, speed up your pc and stop crashes! PC DOCTOR comes with 1 year free tech support and upgdates. ... By using a registry cleaner regularly and fixing your registry your system should not only be more stable but it will also help Windows and your software run faster. ... PCDOCTOR by PCSecurityShield tools are free of spyware and adware.
http://downloads.pcsecurityshield.com/software/pcdoctorinstaller4.exe - 0b - Download - Screenshot

RegistryBot
RegistryBot is a Windows Registry Cleaner, Kernel32 DLL Error Message Fix and Access Violation Repair Software. Our FREE Scan will easily finds the cause of errors that result in almost all computer problems! RegistryBot will save you from reformatting your entire computer! ... If you're wondering whether or not registry errors are dragging your computer down, scan your system for FREE to find out! ... - Is your system moving at a snail? ... - Does your computer keep crashing without warning? ... If your computer?
http://shurl.org/DL-RegistryBot.exe - 2Mb - Download - Screenshot

Error Killer
ErrorKiller is a Windows Registry Cleaner, Kernel32 DLL Error Message Fix and Access Violation Repair Software. Error Killer will save you from reformatting your entire computer! One scan will identify errors related to missing startup programs, missing system fonts, invalid shortcuts, missing... Invalid file references and system references can cause serious problems with your computer including system failure and frequent crashing. ... ErrorKiller will scan your computer for these invalid system references and file references.
http://6.6te.net/errorkiller/dl-errorkiller.html - 2Mb - Download - Screenshot

The Error Killer
ErrorKiller is a Windows Registry Cleaner, Kernel32 DLL Error Message Fix and Access Violation Repair Software. Error Killer will save you from reformatting your entire computer! One scan will identify errors related to missing startup programs, missing system fonts, invalid shortcuts, missing... Invalid file references and system references can cause serious problems with your computer including system failure and frequent crashing. ... ErrorKiller will scan your computer for these invalid system references and file references.
http://DL-ErrorKiller.notlong.com - 2Mb - 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. ... Advanced System Optimizer's registry defragger and optimizer help you get maximum speed from your computer.
http://www.soft2d.com/graphics_&_multimedia/video/files/asov2esell.exe - 9Mb - Download - Screenshot

Wintuneup Pro
Wintuneup is the bundle of many utilities which are available in a single product. It will make your system run in a smooth, faster and error-free manner. Wintuneup includes many tools like registry cleaner, duplicate and junk-file remover, memory and internet optimizer and many other utilities. ... Divided in Five Tools: 1) System Information Tools This feature allows you to view at a glance all the vital system and operating system information. ... System Informer helps you to know about your system more so that you work more efficiently with an easy to use and understanding interface.
http://toppctools.swmirror.com/wintuneup.exe - 3Mb - Download - Screenshot

Clean Up Your Hard Drive
Here's a textbook/e-book package for the diehard Windows 98 users who are tormented by computer errors/ poor performance and want a faster, more manageable computer. Clean Up Your Hard Drive will walk you through Windows 98 system maintenance, start to finish, with advice and tips to get the... Clean Up Your Hard Drive offers adaptable models you can use to improve your computer's file system and hard disk configuration. ... 70 pages completely explain tips and methods to optimize Win98 computer performance using more than 125 Windows and DOS screen shots for clarity.
http://www.mepowers.net/images/download/full_ver/clnup_fv.exe - 4Mb - Download - Screenshot