The following are some black box testing tools collected:
Typhon - http://www.ngssoftware.com/products/internet-security/ngs-typhon.php
MatriXay - http://www.dbappsecurity.com
NGSSQuirreL - http://www.ngssoftware.com/products/database-security/
Watchfire AppScan - http://www.watchfire.com
Cenzic Hailstorm - http://www.cenzic.com/products_services/cenzic_hailstorm.php
Burp Intruder - http://portswigger.net/intruder
Acunetix Web Vulnerability Scanner - http://www.acunetix.com
WebSleuth - http://www.sandsprite.com
NT Objectives NTOSpider - http://www.ntobjectives.com/products/ntospider.php
Fortify Pen Testing Team Tool - http://www.fortifysoftware.com/products/tester
Sandsprite Web Sleuth - http://sandsprite.com/Sleuth/
MaxPatrol Security Scanner - http://www.maxpatrol.com
Ecyware GreenBlue Inspector - http://www.ecyware.com
Parasoft WebKing (more QA-type tool)
N-Stalker Web Application Security Scanner - http://www.nstalker.com