GFI LANguard Network Security Scanner sponsored by GFI Software Ltd. 
Description:  GFI LANguard Network Security Scanner checks networks for possible security vulnerabilities by scanning the entire network for missing security patches, services packs, open shares, open ports, unused user accounts and more.

Kaspersky Anti-Hacker sponsored by Kaspersky Lab 
Description: Kaspersky Anti-Hacker, the personal firewall developed by Kaspersky Labs, offers you reliable protection against all these threats. The product has flexible configuration and five security levels for ease of use.

Sunbelt Network Security Inspector™ sponsored by Sunbelt Software 
Description:  We've designed Sunbelt Network Security Inspector (SNSI): A low-cost, quick-install, fast-result vulnerability scanner that uses a top quality, commercial-grade database with well over 3,000 ranked multi-platform vulnerabilities.

WebAgain sponsored by Lockstep Systems, Inc. 
Description: WebAgain version 2.5 is the only software utility that concentrates on fixing and repairing the web site damage a hacker can create - and even sends an email alert to inform you of the repair.