Nessus

The Nessus vulnerability scanner is the world-leader in active scanners, featuring high-speed discovery, configuration auditing, asset profiling, sensitive data discovery and vulnerability analysis of your security posture.

Commercial Mac OS X Windows Linux Android iPhone

Metasploit

Metasploit Community Edition simplifies network discovery and vulnerability verification for specific exploits, increasing the effectiveness of vulnerability scanners such as Nexpose - for free.

Free Personal Windows Linux BSD

skipfish

A fully automated, active web application security reconnaissance tool. Key features: High speed: pure C code, highly optimized HTTP handling, minimal CPU footprint - easily achieving 2000 requests per second with responsive targets.

Free Open Source Mac OS X Windows Linux BSD

SHODAN

SHODAN is a search engine that lets you find specific computers (routers, servers, etc.) using a variety of filters. Some have also described it as a public port scan directory or a search engine of banners.

Free Web

OpenVAS

The Open Vulnerability Assessment System (OpenVAS) is a framework of several services and tools offering a comprehensive and powerful vulnerability scanning and...

Free Open Source Linux

Intruder

Intruder is a security monitoring platform for internet-facing systems.

Commercial Web

Social-Engineer Toolkit

The Social-Engineer Toolkit is an open source penetration testing framework designed for social engineering. SET has a number of custom attack vectors that allow you to make a believable attack quickly.

Free Open Source Mac OS X Linux Python

Core Impact Pro

Core Impact Pro is the most comprehensive software solution assessing and testing security vulnerabilities throughout your organization.

Commercial Windows Linux

OpenSCAP

SCAP is a line of standards managed by NIST. It was created to provide a standardized approach to maintaining the security of enterprise systems, such as automatically...

Free Linux

Microsoft Baseline Security Analyzer

This vulnerability scanner for the Windows WorkStations et Servers gives you all the actions to enforce security of your Windows operating Systems.

Free Windows