Registry Smoker
Registry Smoker is a very easy to use yet effective registry cleaner. Registry Smoker is very accurate at determining which entries are invalid or not by using a special 3 step method to check each entry to ensure that it is indeed invalid. Registry Smoker also allows you to create an ignore... Another unique feature of Registry Smoker is that it does not remove registry keys (which can be dangerous and cause problems). ... Registry Smoker instead removes only the invalid value under a registry key, therefore increasing the level of safety.
http://www.xp-smoker.com/downloads/regsm.exe - 3Mb - Download - Screenshot

Registry Sweeper
Do you often download and install software from the Internet and uninstall it after a while? Many uninstall programs, however, can't completely remove everything from your computer as you believe - information written into the registry by the application may still remain there - by and by your... Registry Sweeper is an outstanding and easy-to-use registry cleaner that can help you remove useless information from the Windows registry, fix errors in the registry, help you defragment your memory and improve system performance.
http://www.speedbin.com/Download/rssetup.exe - 2Mb - Download - Screenshot

Registry Clean Pro
Registry Clean Pro is a utility that safely removes invalid entries from the Windows registry, thus optimizing the performance of your computer. By default, Registry Clean Pro scans the registry for all types of invalid entries. However, you can use the Custom Scan option to search the registry... You can even schedule Registry Clean Pro to scan the registry every day, once a week or once a month. ... After the scan is complete, Registry Clean Pro can show you a full list of errors, allowing you to choose the invalid entries to remove.
http://www.registry-clean.com/downloads/registry-clean-pro.exe - 951Kb - Download - Screenshot

Registry Medic
With the click of a button, you are able to repair or remove registry entries that refer to a file or folder that has been moved or deleted. You can also scan and remove invalid software data and Start menu data from the registry. Furthermore, this easy-to-use utility can kill trojan viruses... - Find invalid registry entries using our highly intelligent engine - Repair registry entries that refer to a file/folder that has moved - Remove invalid registry entries - Scan and Remove invalid software data in the registry - Scan and Remove invalid Start menu data in the registry - Open folders...
http://dl.filekicker.com/nc/file/126124-450/registrymedic-pf.exe - 2Kb - Download - Screenshot

Registry CleanUP 2006
Not each program can be removed arrears-free again from the computer. Therefore collect particularly in the Windows Registry with the time ever more entries, which are not actually no more needed. A Registry increased in such a manner does not affect straight favorably the system performance. ... The Registry CleanUP is a software solution for settling the Windows Registry. ... Like that it is for example also possible, the Windows Registry continues to optimize, in which the Registry is defragmentiert.
http://www.software4u.de/dl/RCSetup_upd.exe - 2Mb - Download - Screenshot

Update Cleanup
Update Cleanup safely removes the backup files that were created when installing a Windows hotfix or service pack update. Removing the old backup files with Update Cleanup will free up hard disk space. This utility will locate the hotfixes that have created backup files on your PC and will... It will also remove the associated Registry entries for these items -- entries that visibly show up as unnecessary program entries in the Add/Remove Programs panel.
http://www.pcshareware.com/programs/update10.exe - 692Kb - Download - Screenshot

Uninstall Plus
Uninstalling programs leaves behind information such as registry keys,files, folders,menu entries etc. Uninstall Plus searches and removes the information associated with the uninstalled program so your computer is kept cleaner longer. Uninstall Plus includes: ONE CLICK UNINSTALL, uninstall... Uninstall Plus completely uninstalls and removes any traces of uninstalled programs automatically repair registry errors, scan identify and remove errors in your registries, backup and restore your registry to prevent any malfunctions, repair any damage done by previously uninstalled,deleted, or...
http://www.bitqueue.com/ccount/click.php?id=5 - 2Mb - Download - Screenshot

PCWindex
PC Windex allows you to fix common registry problems and remove programs that start up when you turn on your computer. After using PC Windex your registry will be smaller and more robust, invalid registry items will be removed, reducing or eliminating error messages on your system, your system...
http://www.pcwindex.com/PCWindexSetup.exe - 16Mb - Download - Screenshot

Registry Speedup
Registry Speedup is an easy-to-use tool that allows you to safely clean, repair, backup and compact Windows registry with easy. Registry Speedup cleans and repairs invalid information in the Windows Registry to keep your PC running cleaner, faster, and error-free. ... Registry Speedup optimizes the Registry by removing fragmentation, deleting unused entries, and compacting the Registry to make it access fast. ... Registry Speedup allows you to backup your whole Windows Registry, so you can revert to the last good configuration if you encounter a system failure.
http://www.softcows.com/regspeed.exe - 1Mb - Download - Screenshot

RegVac Registry Cleaner
RegVac - Ten Tools to Clean your Registry Why buy several programs to clean your registry when RegVac will do it all and more. Speed up your computer. Avoid computer crashes. Get your registry sparkling clean. And repair Windows and applications. Stronger cleaning power than other registry... Tool #5 - Bad Link Vac Tool #6 - Add/Remove Editor Tool #7 - System Configuration Utility Tool #8 - OpenWith Editor Tool #9 - AutoComplete Editor Tool #10 - Junk Key Editor Bonus Tools - Automation, Undo, Registry Backup, Registry Pack, and Registry Restore.
http://regvac.com/regvacz.exe - 1Mb - Download - Screenshot