- W3C: Markup Validation Service
Offers multiple markup validity and broken link check services for web documents in HTML, XHTML, SMIL, etc.
validator.w3.org
- NetMechanic
A free online service. Our robot will search your Web site and find broken links, spot bad HTML tags, and rate your server's response time.
www.netmechanic.com
- Bobby
Program which graphically marks-up a web page with disability access and browser compatibility suggestions.
bobby.watchfire.com
- CSE 3310 HTML Validator
Offline HTML, XHTML, and CSS syntax checker for Microsoft Windows.
www.htmlvalidator.com
- Dr. Watson
Link verification, spell check, and HTML syntax analysis, all in one nice little hyperlinked analysis.
watson.addy.com
- Total Validator
An HTML, accessibility, spelling, broken links, and cross browser validator checker.
www.totalvalidator.com
- KeepNI Broken Link Checker
Broken link checker that displays the exact location of the broken link in the web page. Free trial available.
tools.keepni.com
- HTML TIDY
Free utility from Dave Raggett cleans up and corrects markup from specialized HTML editors.
www.w3.org/People/Raggett/tidy
- Link Checker Pro
Software for website analysis and detection of broken and other problem links.
www.link-checker-pro.com
- WDG Validators and Checkers
Links to HTML, XML, and SGML validators.
www.htmlhelp.com/links/validators.htm
- InfoLink
Link checker.
www.biggbyte.com
- HTML Powertools for Windows
A suite of useful HTML development tools for Windows to be used alongside your HTML editor.
www.tali.com
- A Real Validator
Offline HTML and XHTML validator for Windows, based on an SGML parser.
www.arealvalidator.com
- Web Directory: HTML Validators
www.flfsoft.com/html/html_validators.html
- htmlchek
Syntactically checks HTML files for a number of possible errors.
www.crossmyt.com/hc/htmlchek/htmlchek.html
- Datashaft
Validates personal information website users leave behind.
www.datashaft.com
- Weblint
dir.yahoo.com/.../Validation_and_Checkers/Weblint
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