by Bruce Tyson

Created on: July 22, 2010

Windows computers rely on a special database called the “registry” to configure software applications, user preferences, licensing information, hardware devices, system performance, and other essential settings. Because of the importance of the registry, keeping it well maintained and free from errors often makes the difference between a well performing machine and one that experiences speed and reliability problems.

Since its debut as part of Windows 3.1, the Windows registry has developed into a highly complex monstrosity, making understanding it, maintaining it, and repairing it difficult tasks for the average user to accomplish. Fortunately, Windows users have access to a number of useful registry tools (often called “cleaners”) that help prevent and correct system problems caused by registry errors. Although many commercial registry cleaners exist, many free registry cleaners exist that take the financial bite out of registry maintenance without sacrificing capability. Here you will find several of the best free registry cleaners you can use for your computer.

> CCleaner http://www.piriform.com/ccleaner

Strickly speaking, a registry cleaner “cleans” out unnecessary information that builds up over time as program settings change and the addition and removal of software leaves behind unneeded information. CCleaner goes beyond that to provide one of the most versatile Windows optimizers available. Among its tools that delete temporary files and adjust or restore Windows and application settings, CCleaner has a powerful registry cleaner that scans for errors within the registry. When the scan is complete, the user has the opportunity to apply or skip its recommended corrections. If the user chooses to apply the CCleaner repairs, the program will optionally create a backup of the registry prior to making any changes.

> Eusing http://www.eusing.com/free_registry_cleaner/registry _cleaner.htm

The Eusing free registry cleaner gives users an easy to use interface that will scan for error and repair them if desired. This program finds missing DLL entries, unused file extensions, paths to files on the hard drive that no longer exist, software installer entries and much more. In fact Eusing can find and repair for registry problems from custom controls to help files.

> AML http://www.amltools.com/

The AML Free Registry Cleaner offers powerful registry cleaning and repair tools as well as added functions such as a Windows startup editor, Windows program and processes viewer, and registry search tool.

> Warnings

Some modifications to the Windows registry can render certain software applications or the entire computer unusable if performed improperly. Although registry cleaner tools help avoid mistakes, remember that they do carry with them a small amount of risk.

Be careful what registry cleaners you choose. Many malicious Web sites will send a popup on your screen that says that registry errors have been found on your computer and that you should download a repair tool or click an online scanner. Do not take chances with your computer by clicking on those unless you enjoy protracted battles with adware, spyware, viruses, and other malware.

The free registry cleaners listed above are free from spyware, adware, and malware. Try them all and see which one you like, or just use all three. 

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