snort - Snort is a free and open source network intrusion prevention system.
Nessus - Nessus Professional is a security platform designed for businesses who want to protect the security of themselves, their clients, and their customers.
Network Hotfix Scanner - Network Hotfix Scanner is a free advanced hotfix check utility that scans network computers for missing hotfixes and patches, and helps you download and install them, gives you a quick look at the hotfixes and patches installed or missed
OpenVAS - The Open Vulnerability Assessment System (OpenVAS) is a framework of several services and tools...
Qualys - Qualys helps your business automate the full spectrum of auditing, compliance and protection of your IT systems and web applications.
cvechecker - The goal of cvechecker is to report about possible vulnerabilities on your system, by scanning the...