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)   Windows XP Registry Cleaner 5.07
XP Registry Cleaner - Instant Registry Fix. Scan Your XP System in Seconds! If your windows XP system is running very slow on your PC, or if you are seeing alerts that say "registry error", then you need to scan and clean your registry. Download Now!
License:Shareware, 29.95 USD to buy Size:0.36 MB

 3)   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

 4)   Free Windows Registry Cleaner 1.1.0
Free Windows Registry Cleaner is a 100% free utility that removes registry errors from your computer. Registry errors occur for many reasons, including incorrect uninstallation, incorrect removal of software or corrupt hardware drivers.
License:Freeware, 0.00 USD to buy Size:0.93 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)   Registry Cleaner - Free Scan Tool 1.1
Registry Cleaner - Free PC Scanning Tool. Scan your PC for registry problems and then instantly clean your system with a few clicks of the mouse. Make your PC run like new again and accelerate its performance just by cleaning up your system registry.
License:Freeware, 0 USD to buy Size:0.36 MB

 7)   Registry Fix Tool For Windows 2.02
Instant Registry Fix Tool
License:Freeware, $0 USD to buy Size:0.36 MB

 8)   Error Nuker 2006
Let Error Nuker, your amazing FREE PC Diagnostics tool, identify the problems in your Windows registry and determine what your PC is suffering from. Error Nuker will scan Windows registry and give you a detailed list of errors Absolutely FREE.
License:Shareware, 39.95 USD to buy Size:2.3 MB

 9)   Virtual Desktop Toolbox 2.80.0
Enlarges monitor by creating desktops
License:Freeware, $0.0 USD to buy Size:12.32 MB

 10)   Registrar Registry Manager 5.66
Registrar Registry Manager is a complete registry management solution with a wealth of powerful features. It is intended as a complete and safe solution for administrators and power users for maintaining the Windows registry.
License:Shareware, 44.95 USD to buy Size:2.51 MB

 11)   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

 12)   MISPBO Free Registry Cleaner 3.0
MISPBO Free Registry Cleaner is an advanced registry cleaning tool. The main function of is to allow the removal of unnecessary keys from the Windows Registry.It can also backup and defrag the registry.
License:Freeware, USD to buy Size:1.03 MB

 13)   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

 14)   Registry Cleaner - RegFix Mantra 5.1
RegFix Mantra undertakes complete cleaning of Windows Registry and hard drive, fixes inconsistencies in Registry and files. Optimizes your system, increase OS stability and speeds up your softwares by maintaining Registry Integrity.
License:Shareware, 29.95 USD to buy Size:1.00 MB

 15)   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

 16)   Registry Repair - Free Scan Tool For PC 1.46
Registry Repair - Free PC Scanning Tool. Scan your PC for registry problems and then instantly clean your system with a few clicks of the mouse. Make your PC run like new again and accelerate its performance just by cleaning up your system registry.
License:Freeware, 0 USD to buy Size:0.36 MB

 17)   Error Repair Professional 3.83
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

 18)   Registry Defragmentation 8.9.7.16
Registry Defragmentation is a small utility that does gigantic improvements in computer performance. This application physically defragments the Windows registry file to give it the proper linear structure.
License:Shareware, 11.95 USD to buy Size:2.45 MB

 19)   SpotFreePC Registry Cleaner 4.0
Increase your PC's stability and performance with SpotFreePC. SpotFreePC cleans your registry, manages startup programs, manages IE plugins, uninstalls applications and much more. Give SpotFreePC a try now and get your PC back in shape.
License:Shareware, 29.95 USD to buy Size:1.64 MB

 20)   Registry Fix and Cleaner 5.7
Registry Fix can Restore Windows Registry Files, Repair DLL Error Messages and Fix General Protection Fault Errors. Scan your system for invalid file and system references that cause instability, PC errors, crashes, and general system slowdowns FREE.
License:Shareware, 37.00 USD to buy Size:1.25 MB