Web Site Security Test Tools

OWASP Security Testing Tools - Variety of free and open source web security testing tools via the OWASP (Open Web Application Security Project) site. SQLiX is an SQL injection vulnerability test tool that uses multiple techniques - conditional errors injection; blind injection based on integers, strings or statements, MS-SQL verbose error messages ("taggy" method); can identify database version and gather info for MS-Access, MS-SQL, MySQL, Oracle and PostgreSQL. Other security testing tools available include WebScarab, Tiger, LAPSE, Pantera, etc.

Wikto - Web server security assessment tool for windows servers, open source, from SensePost. It's three main sections are its Back-End miner, Nikto-like functionality, and Googler to obtain additional directories for use by the other two. Includes ability to export results to CSV file.

NMap Network Mapper - Free open source utility for network exploration or security auditing; designed to rapidly scan large networks or single hosts. Uses raw IP packets in novel ways to determine what hosts are available on the network, what services (ports) they are offering, what operating system (and OS version) they are running, what type of packet filters/firewalls are in use, and many other characteristics. Runs on most flavors of UNIX as well as Windows.