Vote for N-Stalker Web Application Security Scanner
N-Stalker Web Application Security Scanner 2006 is a web security assessment tool that incorporates the well-known N-Stealth HTTP Security Scanner and its 35,000 Web Attack Signature database, along with a Component-oriented Web Application Security Assessment technology, which is capable of sweeping your Web Application for a large number of vulnerabilities common to this environment, including Cross-site Scripting and SQL injection, Buffer Overflow and Parameter Tampering attacks and much more.