Perfect Companion 

Removes invalid entries in thre Registry and watches for file changes. Creates an undo file when cleaning the Registry. Correctly registers DLL and OCX files
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Dbx2mail 

Program to extract or find email addresses from an Outlook Express folder or dbx file, using filter settings. Eg a good help to identify returning, invalid email addresses. This program can also be a good tool to help recover email addresses.
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Easy Registry Optimizer 

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.
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Contacts Verifier 

Contacts Verifier is the Microsoft Outlook add-in designed to monitor the validity of email addresses. It is able to check your contacts throughout in a few minutes and notify you of contacts that contain invalid email addresses.
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MacVolumes 

MacVolumes is a free Windows system utility to analyze Macintosh files signatures stored in Mac volumes index on Windows NT 4.0 or 2000. Automatic connection to the Macintosh servers and volumes; detects invalid volumes, monitors disks optimization
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System LifeGuard 

Keep your PC like new with these 15 essential tools.It deletes junk,organizes your data, cleans the registry, thoroughly uninstalls unwanted programs, removes invalid links, protects your internet privacy and safeguards your vital data.
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