By time Windows registry gathers a lot of invalid entries that cause system complications and slow down your computer significantly. Included in Complete Registry Cleaner is a registry defragmenter also called compressor which removes the empty spaces after a cleanup and thereby reduces registry size. Registry defragmentation increases the performance of your computer dramatically. One-click registry backup, cleanup and defrag.
Registry Drill
The Registry Drill is the most in-depth Registry utility. Going through the Registry character by character searching for any possible errors.
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.
MagicTweak
MagicTweak is a special Tweaking software designed to optimize and personalize Windows XP/2000/Me/9X .
NT Registry Analyzer
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!
Advanced Registry Doctor Lite
Advanced Registry Doctor (ARD) will cure your registry and thus provide a better performance of your Windows OS.