[Discover] The W3C QA Toolbox - Validators, checkers and other tools for Webmasters and Web Developers http://www.w3.org/QA/Tools/
(tools css wai xhtml) 
[Discover] The W3C Markup Validation Service http://validator.w3.org/ (validation xhtml validator html)
[Discover] The W3C CSS Validation Service http://jigsaw.w3.org/css-validator/ (css validation accessibility testing)
[Discover] Feed Validator for Atom and RSS http://feedvalidator.org/ (feed tools xml validation)
[Discover] W3C Link Checker http://validator.w3.org/checklink (validation link tools testing)
[Discover] W3C - Web Standards Switch http://www.w3.org/QA/2003/03/web-kit (standards webdesign validation webstandards)
[Discover] Complete List of Web Accessibility Evaluation Tools http://www.w3.org/WAI/ER/tools/complete (accessibility tools testing tool)
[Discover] Semantic data extractor - QA @ W3C http://www.w3.org/2003/12/semantic-extractor.html (tool semantics xhtml html)
[Discover] W3C Link Checker Documentation http://validator.w3.org/docs/checklink.html (cpan validation validator qa)
[Discover] W3C Mobile Web Best Practices checker http://validator.w3.org/mobile/ (mobile tools webdesign programming)
[Discover] P3P Validator http://www.w3.org/P3P/validator.html (validation standard tools webmaster)
[Discover] James Clark's Random Thoughts: Validation not necessarily harmful http://blog.jclark.com/2007/04/validation-not-necessarily-harmful.html (validation xml schema relax)
[Discover] W3C Feed Validatior http://validator.w3.org/feed/ (validator rss atom feeds)
[Discover] XML Schema Checking Service http://www.w3.org/2001/03/webdata/xsv (xml validation schema xsd)
[Discover] ATRC Web Accessibility Checker http://checker.atrc.utoronto.ca/servlet/Submit (validation accessibility testing tools)
[Discover] Dare Obasanjo aka Carnage4Life - Versioning Does Not Make Validation Irrelevant http://www.25hoursaday.com/weblog/PermaLink.aspx?guid=9645e52f-153e-40da-b612-3e90db30cc14 (validation version rss)
[Discover] RDF Validator and Converter http://rdfabout.com/demo/validator/ (rdf validation service convert)
[Discover] User's guide for the W3C Markup Validator http://dev.w3.org/cvsweb/~checkout~/validator/htdocs/docs/users.html (validation xhtml earl)
[Discover] Integrate This»Blog Archive » Validation considered harmful http://www.coactus.com/blog/2006/12/validation-considered-harmful/ (validation schema xml relax)
[Discover] W3C RDF Validation Service http://www.w3.org/RDF/Validator/ (validation rdf semanticweb tools)

[Discover] EARL at ATRC Web Accessibility Checker http://checker.atrc.utoronto.ca/servlet/Earlpage (accessibility validation earl)
[Discover] Coding Horror: It's a Malformed World http://www.codinghorror.com/blog/archives/000723.html (html design xhtml philosophy)
[Discover] Sam Ruby: Tolerance http://intertwingly.net/blog/2006/12/13/Tolerance/ (validation version rss)
[Discover] HTML-XML Validator http://validator.aborla.net/index.php5 (xhtml xml validators)
[Discover] Common HTML Validation Problems http://www.htmlhelp.com/tools/validator/problems.html#script (script html validation javascript)
[Discover] Standards, Guidelines, and Style Guides - The Web Standards Project http://www.webstandards.org/learn/external/others/ (accessibility resources webstandards tools)
[Discover] XENU, Link Checking Software http://home.snafu.de/tilman/xenulink.html (links freeware tools webdesign)
[Discover] Web Link Validator: The Broken Links Doctor http://www.relsoftware.com/wlv/ (software tools webmaster archiving)
[Discover] The WDG's Links to Validators http://htmlhelp.org/links/validators.htm (wdg validator)
[Discover] WebAIM: Creating Semantic Structure http://www.webaim.org/techniques/semanticstructure/ (css semantics html seo)
[Discover] ASP.NET QuickStart Tutorial http://quickstarts.asp.net/QuickStartv20/aspnet/doc/vwd.aspx (accessibility code asp validator)
[Discover] Web Authoring Tools http://htmlhelp.org/tools/ (wdg validator css html)
[Discover] Word division in IE and other notes on the nobr markup http://www.cs.tut.fi/~jkorpela/html/nobr.html#valid (validator nobr)
[Discover] Documentation of the Programmatic Interface (API) to The W3C Markup Validation Service http://validator.w3.org/docs/api.html (validation api standards xhtml)
[Discover] Nikita the Spider * Bulk/Batch HTML Validation, Link Checking and More http://nikitathespider.com/ (validation tools validator spider)
[Discover] Creating your own DTD for HTML validation http://www.cs.tut.fi/~jkorpela/html/own-dtd.html (doctype validator)
[Discover] JSONLint - The JSON Validator. http://www.jsonlint.com/ (javascript json tools validator)
[Discover] Page Valet Validator http://valet.webthing.com/page/ (validator xhtml xml html)
[Discover] Site Valet http://valet.webthing.com/ (validator accessibility testing validation)
[Discover] WAVE - Web Accessibility Evaluation Tool http://wave.webaim.org/ (accessibility tools validator software)
[Discover] JSLint, The JavaScript Verifier http://www.jslint.com/ (javascript validation programming validator)
[Discover] The W3C Markup Validation Service http://validator.w3.org/ (validation xhtml validator html)
[Discover] The W3C CSS Validation Service http://jigsaw.w3.org/css-validator/ (css validation accessibility testing)
[Discover] Feed Validator for Atom and RSS http://feedvalidator.org/ (feed tools xml validation)
[Discover] W3C Link Checker http://validator.w3.org/checklink (validation link tools testing)
[Discover] W3C - Web Standards Switch http://www.w3.org/QA/2003/03/web-kit (standards webdesign validation webstandards)
[Discover] Complete List of Web Accessibility Evaluation Tools http://www.w3.org/WAI/ER/tools/complete (accessibility tools testing tool)
[Discover] Semantic data extractor - QA @ W3C http://www.w3.org/2003/12/semantic-extractor.html (tool semantics xhtml html)
[Discover] W3C Link Checker Documentation http://validator.w3.org/docs/checklink.html (cpan validation validator qa)
[Discover] W3C Mobile Web Best Practices checker http://validator.w3.org/mobile/ (mobile tools webdesign programming)
[Discover] P3P Validator http://www.w3.org/P3P/validator.html (validation standard tools webmaster)
[Discover] James Clark's Random Thoughts: Validation not necessarily harmful http://blog.jclark.com/2007/04/validation-not-necessarily-harmful.html (validation xml schema relax)
[Discover] W3C Feed Validatior http://validator.w3.org/feed/ (validator rss atom feeds)
[Discover] XML Schema Checking Service http://www.w3.org/2001/03/webdata/xsv (xml validation schema xsd)
[Discover] ATRC Web Accessibility Checker http://checker.atrc.utoronto.ca/servlet/Submit (validation accessibility testing tools)
[Discover] Dare Obasanjo aka Carnage4Life - Versioning Does Not Make Validation Irrelevant http://www.25hoursaday.com/weblog/PermaLink.aspx?guid=9645e52f-153e-40da-b612-3e90db30cc14 (validation version rss)
[Discover] RDF Validator and Converter http://rdfabout.com/demo/validator/ (rdf validation service convert)
[Discover] User's guide for the W3C Markup Validator http://dev.w3.org/cvsweb/~checkout~/validator/htdocs/docs/users.html (validation xhtml earl)
[Discover] Integrate This»Blog Archive » Validation considered harmful http://www.coactus.com/blog/2006/12/validation-considered-harmful/ (validation schema xml relax)
[Discover] W3C RDF Validation Service http://www.w3.org/RDF/Validator/ (validation rdf semanticweb tools)
[Discover] XHTML Validator For All http://www.thejoyofcode.com/XHTML_Validator_For_All.aspx (xhtml validation httpmodule iis)
[Discover] EARL at ATRC Web Accessibility Checker http://checker.atrc.utoronto.ca/servlet/Earlpage (accessibility validation earl)
[Discover] Coding Horror: It's a Malformed World http://www.codinghorror.com/blog/archives/000723.html (html design xhtml philosophy)
[Discover] Sam Ruby: Tolerance http://intertwingly.net/blog/2006/12/13/Tolerance/ (validation version rss)
[Discover] HTML-XML Validator http://validator.aborla.net/index.php5 (xhtml xml validators)
[Discover] Common HTML Validation Problems http://www.htmlhelp.com/tools/validator/problems.html#script (script html validation javascript)
[Discover] Standards, Guidelines, and Style Guides - The Web Standards Project http://www.webstandards.org/learn/external/others/ (accessibility resources webstandards tools)
[Discover] XENU, Link Checking Software http://home.snafu.de/tilman/xenulink.html (links freeware tools webdesign)
[Discover] Web Link Validator: The Broken Links Doctor http://www.relsoftware.com/wlv/ (software tools webmaster archiving)
[Discover] The WDG's Links to Validators http://htmlhelp.org/links/validators.htm (wdg validator)
[Discover] WebAIM: Creating Semantic Structure http://www.webaim.org/techniques/semanticstructure/ (css semantics html seo)
[Discover] ASP.NET QuickStart Tutorial http://quickstarts.asp.net/QuickStartv20/aspnet/doc/vwd.aspx (accessibility code asp validator)
[Discover] Web Authoring Tools http://htmlhelp.org/tools/ (wdg validator css html)
[Discover] Word division in IE and other notes on the nobr markup http://www.cs.tut.fi/~jkorpela/html/nobr.html#valid (validator nobr)
[Discover] Documentation of the Programmatic Interface (API) to The W3C Markup Validation Service http://validator.w3.org/docs/api.html (validation api standards xhtml)
[Discover] Nikita the Spider * Bulk/Batch HTML Validation, Link Checking and More http://nikitathespider.com/ (validation tools validator spider)
[Discover] Creating your own DTD for HTML validation http://www.cs.tut.fi/~jkorpela/html/own-dtd.html (doctype validator)
[Discover] JSONLint - The JSON Validator. http://www.jsonlint.com/ (javascript json tools validator)
[Discover] Page Valet Validator http://valet.webthing.com/page/ (validator xhtml xml html)
[Discover] Site Valet http://valet.webthing.com/ (validator accessibility testing validation)
[Discover] WAVE - Web Accessibility Evaluation Tool http://wave.webaim.org/ (accessibility tools validator software)
[Discover] JSLint, The JavaScript Verifier http://www.jslint.com/ (javascript validation programming validator)
