SPI Dynamics (live) – http://zero.webappsecurity.com/
Cenzic (live) – http://crackme.cenzic.com/
Watchfire (live) – http://demo.testfire.net/
Acunetix (live) – http://testphp.acunetix.com/ http://testasp.acunetix.com http://testaspnet.acunetix.com
WebMaven / Buggy Bank – http://www.mavensecurity.com/webmaven
Foundstone SASS tools – http://www.foundstone.com/us/resources-free-tools.asp
Updated HackmeBank – http://www.o2-ounceopen.com/technical-info/2008/12/8/updated-version-of-hacmebank.html
OWASP WebGoat – http://www.owasp.org/index.php/OWASP_WebGoat_Project
OWASP SiteGenerator – http://www.owasp.org/index.php/Owasp_SiteGenerator
Stanford SecuriBench – http://su.stanford.edu/~livshits/securibench/
SecuriBench Micro – http://su.stanford.edu/~livshits/work/securibench-micro/


HTTP proxying / editing
WebScarab – http://www.owasp.org/index.php/Category:OWASP_WebScarab_Project
Burp – http://www.portswigger.net/
Paros – http://www.parosproxy.org/
Fiddler – http://www.fiddlertool.com/
Web Proxy Editor – http://www.microsoft.com/mspress/companion/0-7356-2187-X/
Pantera – http://www.owasp.org/index.php/Category:OWASP_Pantera_Web_Assessment_Studio_Project
Suru – http://www.sensepost.com/research/suru/
httpedit (curses-based) – http://www.neutralbit.com/en/rd/httpedit/
Charles – http://www.xk72.com/charles/
Odysseus – http://www.bindshell.net/tools/odysseus
Burp, Paros, and WebScarab for Mac OS X – http://www.corsaire.com/downloads/
Web-application scanning tool from `Network Security Tools’/O’Reilly – http://examples.oreilly.com/networkst/
JS Commander – http://jscmd.rubyforge.org/
Ratproxy – http://code.google.com/p/ratproxy/


RSnake’s XSS cheat sheet based-tools, webapp fuzzing, and encoding tools
Wfuzz – http://www.edge-security.com/wfuzz.php
ProxMon – http://www.isecpartners.com/proxmon.html
Wapiti – http://wapiti.sourceforge.net/
Grabber – http://rgaucher.info/beta/grabber/
XSSScan – http://darkcode.ath.cx/scanners/XSSscan.py
CAL9000 – http://www.owasp.org/index.php/Category:OWASP_CAL9000_Project
HTMangLe – http://www.fishnetsecurity.com/Tools/HTMangLe/publish.htm
JBroFuzz – http://sourceforge.net/projects/jbrofuzz
XSSFuzz – http://ha.ckers.org/blog/20060921/xssfuzz-released/
WhiteAcid’s XSS Assistant – http://www.whiteacid.org/greasemonkey/
Overlong UTF – http://www.microsoft.com/mspress/companion/0-7356-2187-X/
[TGZ] MielieTool (SensePost Research) – http://packetstormsecurity.org/UNIX/utilities/mielietools-v1.0.tgz
RegFuzzer: test your regular expression filter –