Check web sites for broken links
Free, fast offline HTML editor and syntax checker
Find and fix your broken links
GEDCOM Validator is a tool for checking that GEDCOM files follow the GEDCOM specification. It helps users fix any problems.
Offline HTML, XHTML, CSS, Accessibility syntax and link checker with editor
Validate all your XML files
Validate all your html
Phone List Validator is designed for all users
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Make sure your web is validated to Web standards