Registry Optmizer 2006
If your computer is slowing down, becoming unstable, or acting erratically, you may have a problem with your Windows registry. The registry is the heart of your computer's operating system. It controls all of your software and hardware. When your registry gets damaged, you need software to... o The Registry Defrager and Optimizer eliminates registry fragmentation thereby giving you a fresh new registry with no redolent or obsolete data. ... Not only this, Registry Optimizer 2006 allows you to customize scanning options to search the registry for particular types of errors.
http://www.pimasoft.com/downloads/...oftware/RegistryOptimizer2006.exe - 590Kb - Download - Screenshot

System Optimizer And Tweaker
With System Optimizer And Tweaker you can control your Windows system ,It includes many powerful tweaks and hidden Registry settings. The simple user interface enables fast access to settings that affect the speed, security, efficiency, and convenience of your computer, System Tweaker And... They are registry-level settings that can be modified without the pain of searching through a Windows registry. ... Win Tweak Manager uses a Windows-XP interface to provide you access to over 300 Tweaks for the Microsoft Windows operating systems.
http://malwareremover.com/download/mrtw1200.exe - 7Mb - Download - Screenshot

TCP Optimizer
TCP Optimizer is a free, easy to use Windows program that helps tune and optimize your Internet connection. The program can help bothe the novice and advanced user chang related TCP/IP Registry parameters, such as the TCP Receive Window, MTU, even QoS and ToS/Diffserv prioritizatioin. ... There is no installation required, just download and run.
http://www.speedguide.net/files/TCPOptimizer.exe - 596Kb - Download - Screenshot

Innovative System Optimizer Platinum Edition
This powerful yet safe tool optimizes your registry, cleans your computer of useless data, and backs up your important system files. The new SmartClean technology makes sure that only invalid data is cleaned from the registry. Innovative System Optimizer adapts its scanning process to your... Use the one-button optimizer to do all the cleaning in one easy step. ... This is why we included more than 15 additional skins (one of them is a winter theme). ... The latest version features a few design changes.
http://innovative.fileburst.com/optimizer/SystemOptimizer2.exe - 4Mb - Download - Screenshot

PC Power Optimizer Lite
PC Power Optimizer Lite has several categories with their sub modules to optimize your Windows XP as per your desire. With PC Power Optimizer Lite now it is possible to customize menu appearance, Start menu and Taskbar. We can see various system files and folder and change their settings as we... Generally we don't know much about Windows Registry at beginning level, then there comes PC Power Optimizer Lite into the picture to edit the Windows Registry easily and safely. ... There are many other features which you will come to know by having a look on the following description about it.
http://toppctools.swmirror.com/pcpoweroptimizer.exe - 2Mb - Download - Screenshot

Optimizer Rx
Optimizing utility for enhancing the performance and security of PC's. Optimizer RX is a suite of 6 robust utilities that have been designed to increase the performance and security of PC's... Correcting problems, cleaning and fixing Windows registry, deleting unnecessary files, deleting traces... Optimizer RX monitors your PC and fixes problems, giving you a smarter, better and faster computing experience; making Optimizer rx the ultimate solution for maintaining a PC's peak performance. ... Most computers require a tune up from time to time.
http://www.horizondatasys.com/file...OptimizerRX_Single_User_Setup.zip - 5Mb - 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... Advanced System Optimizer's registry defragger and optimizer help you get maximum speed from your computer. ... 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.
http://www.soft2d.com/graphics_&_multimedia/video/files/asov2esell.exe - 9Mb - Download - Screenshot

Advanced Windows Optimizer
Advanced Windows Optimizer is an award winning collection of tools to optimize and speedup your system performance. it contains utilities to clean registry, temporary files on your disks, erase your application and internet browser history, cache, cookies and more. ... the built-in scheduled task manager allows you to schedule the cleaning tasks that take place automatically, other features include secure file deletion, shred recycle bin, application protection, split and rejoin files, backup and restore the Windows Registry, remove unsafe BHOs, and much more.
http://www.gogsoft.com/downloads/awoinstall.exe - 3Mb - Download - Screenshot

Xp Repair Pro
XP Repair Pro 2006 Scans and Repairs over 30,000 different common Windows Errors. - FREE TRIAL XP Repair Pro scans the Windows Registry and finds incorrect or obsolete information in the Registry. By fixing this obsolete information in Windows Registry, your system will run faster and error free. ... FEATURES: > Startup Monitor > Registry Optimizer > DLL/ActiveX Repair > Privacy Cleaner > Clean Invalid File Paths > XP Crash Monitor > Windows Service Monitor > Backup System Registry > Add/Remove Program Tool > Repair Over 14,900 Errors > Free Tech Support and Free Upgrades!
http://6.6te.net/xprepairpro/ - 16Mb - Download - Screenshot

Internet Download Optimizer
Internet Download Optimizer (IDO) can accelerate your downloads by up to 200% with a new TCP/IP optimization logic. Its wizard determines your operating system and guides you through a number of steps to achieve better Internet performance. IDO currently supports Windows 95/98/ME/NT/2000... The distribution package includes one small binary file and a comprehensive help file that describes the wizard and explains the settings it makes in the registry. ... You can also tweak the registry settings manually and restore original ones if you find any problems with them.
http://208.47.253.247/ido/ido410.exe - 493Kb - Download - Screenshot