Safety: Always back up your registry and restore if registry gets currupted or spy/adware changes registry values. Optimization and fault prevention: Remove invalid registry entries to make Windows and programs run faster and with less errors.

Emsa WinStartUp Manager is a tool that helps controlling programs that startup with your Windows. You can enable or disable any program that automatically runs at window startup, both through system registry settings or folders. Freeware.

The fastest, easiest and most complete remote Windows NT registry management tool available. With the ability to change tens of thousands of keys per minute, it can reduce the amount of time you spend doing registry maintenance from days to minutes

Tweak Win XP with Optimum XP! It's so easy to accelerate, secure and customize XP with over 150 powerful tweaks and hidden settings. Optimize your CPU, RAM, hard drive, Internet speed, network, security, Windows, IE, Office, cheat at Hearts and more!

Registry Clean Pro is a handy utility that scans the Windows registry for invalid entries and safely removes them. Registry Clean Pro can check the registry in background mode and alert you when it finds any errors.

Riverbit Registry Cleaner is an easy to use and extremely effective tool to safely clean, repair and optimize Windows registry in a couple of mouse clicks. Riverbit Registry Cleaner backup function lets you easily recover any changes if required.