Zilla WinCleaner N' Optimizer 

Zilla WinCleaner N' Optimizer is like having your own personal cleaning company for your Windows® computer. Like a professional cleaner, the program knows exactly what kind of dirt to look for, where to find it & how to get rid of it efficiently.
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Zip Assistant 

A program for reading and writing standard zipfiles .Easy for new users, powerful for advanced users.
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ZipONE Deluxe 

ZipONE Deluxe v3.1 - Specifically designed to take advantage of Brand New Features in WindowsXP Editions (Home, Professional and newer): Support for WindowsXP Color Themes: Blue, Green(Olive) and Silver, ZIP and AES Encryption, Dockin Toolbars, etc
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ZipWorx Explorer 

ZIP Compatible Software offers better compression, faster operations, new wizards, tools and windows-explorer integrated modules! Highly customizable User Interface featuring toolbars, menus, Internal support for extracting more archive type!
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Zone Clock 

Zone clock is a multi Time Zone clock from UK Software. using a great looking interface, you can choose from over 26 world time zones to be shown on rotation at a user defined interval in seconds. You can also show time zones on demand
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