ZipPassword 

ZipPassword is able to recover lost password to pkzip/WinZip archives. Brute-force and smart-force attack and dictionary search are implemented. ZipPassword features unprecedented search speed: up to 1,000,000,000 (billion!) passwords per minute.
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CRC32 COM Component 

CRC32 COM Component is for ASP, .NET, Cold Fusion, VB, VC++ and other languages. The com component will quickly generate a CRC32 checksum from files or a text string in hex or numeric as the official polynomial used by CRC-32 in PKZip, WinZip and
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HTML2Zip 

This unique software acts similar to WinZip enabling you to compress your HTML files into much smaller zip archives with compression ratio of 90% and more! Your web pages will load quicker and you'll save both your web traffic and disk space.
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The ZIP Wizard 

ZIPping files has never been easier with The ZIP Wizard! Cute, simple, easy and fast way to send files across the Internet or create compressed file archives.
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ZipItFast! 

ZipItFast 3.0 is a FREE Commercial quality all in one archive utility featuring a windows One Click Zip feature for quick viewing, running, extracting, adding, and deleting files in archives in the fastest time possible. With ZipItFast Pro.
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Chilkat Zip ActiveX - Affordable Zip ActiveX 

An affordable, advanced, feature-rich Zip ActiveX compression component that can satisfy your application's file and data compression needs. Includes file and in-memory Zip and Unzip, AES encryption, Zip password-protection, self-extract, more...
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