1)   Windows System Optimizer - Free Edition 2.0
Windows System Optimizer Free Edition is an optimizer software that speeds up your system, giving you maximum performance. It includes cleanup tools for Windows system.
License:Freeware, USD to buy Size:1.9 MB

 2)   Registry Fix It! 4.0.2
Registry Fix It! v4.0.1 is an advanced registry cleaner for Windows that allows you to safely scan, clean, and repair registry problems with a few simple mouse clicks.
License:Shareware, 29.95 USD to buy Size:3 MB

 3)   Go Registry Mechanic 5.2
Safely clean, repair and optimize the Windows registry with a few simple mouse clicks! Problems with the Windows registry are a common cause of Windows crashes, slow performance and error messages. Make your system more stable.Improve the performance
License:Shareware, 29.95 USD to buy Size:3.27 MB

 4)   Free Error Cleaner 1.00
Cleaning and Repairing Windows Registry made Free and Easy - Free Error Cleaner by PCSleek.com
License:Freeware, 0.00 USD to buy Size:0.86 MB

 5)   Windows System Optimizer 2.0
Windows System Optimizer is an optimizer software that speeds up your system, giving you maximum performance. It includes cleanup tools for Windows system.
License:Shareware, 29.99 USD to buy Size:1.9 MB

 6)   NT Registry Analyzer 1.0
Uninstalling or changing software, hardware and drivers never leaves a PC clean. Use NT Registry Analyzer to find and remove incorrect or obsolete information in the registry. Stay away from system crashes!
License:Freeware, 0 USD to buy Size:1 MB

 7)   RegScrubXP 3.25
Cleaning out the junk from System Registry
License:Freeware, USD to buy Size:0.57 MB

 8)   PDF-ShellTools 1.0.0.8
Work with pdf's directly from Windows Shell
License:Freeware, USD to buy Size:2.33 MB

 9)   Windows Registry SWEEP (Cleaner) 2008.1
Windows Registry SWEEP is the latest in PC error repair.It will do a complete scan and clean of your entire system in 2 minutes! All corrupt files and registry will be repaired so that your PC functions just as when you first purchase it.
License:Freeware, 29.95 USD to buy Size:0.10 MB

 10)   Registry Defender Platinum 4.0.2
Find and repair registry errors, cleanup unneeded files, defragment your drive, backup system files, and more! Registry Defender Platinum is a powerful system diagnostic utility that helps you optimize system performance.
License:Shareware, 29.95 USD to buy Size:2.65 MB

 11)   RegDoctor 2.02
RegDoctor can safely and quickly clean and repair Windows registry problems with a few simple mouse clicks! It uses an intelligent, high-performance detection engine to accurately identify missing and invalid references in your Windows registry.
License:Shareware, 29.95 USD to buy Size:2.13 MB

 12)   XP Repair Professional 4.1
XP Repair Pro 2006 repairs over 53,000 Windows errors and can improve system performance by up to 750 percent. Optimize, clean, and repair Windows registry, fix PC crashes, error messages and more... Free Support and Upgrades! FREE DOWNLOAD
License:Shareware, 36.95 USD to buy Size:25.41 MB

 13)   Registry Smart 4.4
RegistrySmart is the intelligent choice in 1-Click PC error diagnostics and repair. All corrupt files, paths, and registry keys are analyzed and automatically repaired so that your PC functions just as when first you purchased it. Try it for Free!
License:Shareware, 19.95 USD to buy Size:2.3 MB

 14)   Error Repair Professional 3.84
Error Repair Professional - Keep your PC operating smoothly by using Error Repair Professional to scan, identify, clean and repair registry errors in your PC with a single click.
License:Shareware, 29.97 USD to buy Size:1.2 MB

 15)   RegFix Mantra 4.2
Extremely effective Registry Cleaner designed to fix Windows Registry Errors, Remove inconsistencies and enhance your PCs performance. Eliminate all windows registry errors, hence optimizing your PC. + Advanced System Management Features. Try it FREE
License:Shareware, 39.95 USD to buy Size:0.96 MB

 16)   RegCOPA Registry Editor 3.01
RegCOPA Registry Editor makes the necessary task of editing your windows registry easier and more convenient. Add bookmarks, windows shortcuts and comments to make editing registry entries quick and easy.
License:Shareware, 19.95 USD to buy Size:8.59 MB

 17)   The Error Killer 2007
ErrorKiller is a Windows Registry Cleaner, Kernel32 DLL Error Message Fix and Access Violation Repair Software. Repair Errors related to missing startup and dll files, invalid device drivers, application paths, shortcuts and associations. - FREE SCAN
License:Shareware, 19.95 USD to buy Size:2.30 MB

 18)   Registry Cleaner 6.0.1
Registry Cleaner v6.0 is an advanced registry cleaner for Windows that allows you to safely scan, clean, and repair registry problems with a few simple mouse clicks.
License:Shareware, 29.95 USD to buy Size:1.9 MB

 19)   Registry Restore 4.0
Registry Restore is a Windows Backup Utility. It's main focus is on backing up the Windows Registry which is considered to be the most vulnerable component in the Windows operating system. It also makes backup copies of other pertinent system files.
License:Shareware, 19.95 USD to buy Size:2.02 MB

 20)   My Registry Cleaner Fixer 2007
MyRegistryCleaner Cleans and Repairs your computers registry with an easy to use system that will not only speed up your PC but also prevent your computer from crashing in the future. Repair and Prevent Errors on your PC - Anytime you need it.
License:Shareware, 29.99 USD to buy Size:0.12 MB