Web Directory

» A Real Validator
   Windows. Based on an SGML parser. Shareware.
   http://arealvalidator.com/

» CSE HTML Validator
   Windows. HTML, XHTML, and CSS validator. Also checks accessibility, links, and spelling. Commercial pro version and free lite version.
   http://www.htmlvalidator.com/

» Demoroniser
   Perl script which corrects incompatible HTML generated by Microsoft applications.
   http://www.fourmilab.ch/webtools/demoroniser/

» Firefox extension HTML Validator
   A W3C Tidy-based HTML Validator which checks pages from within the Firefox web browser.
   http://users.skynet.be/mgueury/mozilla/index.html

» HTML Code Cleaner/Compressor
   Windows. Optimizes HTML documents removing unnecessary HTML code while checking links. Commercial software with free trial.
   http://www.htmlcodecleaner.com-http.com/

» HTML PowerTools
   Windows. Includes validator, image scanner, meta tag manager, find and replace tool, tag pair fixer, and an HTML to text converter. Commercial software; 30-day demo.
   http://www.tali.com/

» HTML Shrinker
   Windows. Removes unnecessary characters from HTML, CSS, Perl, JavaScript and many other web file formats. Commercial pro version and free light version.
   http://www.thepluginsite.com/products/htmlshrinker/

» HTML Tidy
   Unix, Windows, MacOS, and others. Validator fixes errors in HTML and XHTML. Converts HTML to XHTML. Free Software.
   http://www.w3.org/People/Raggett/tidy/

» LinkScan/QuickCheck
   Unix and Windows. Lint and link checker. Commercial software; free trial. Also online checking.
   http://elsop.com/linkscan/

» SP
   Windows and Unix. Object-oriented toolkit for SGML parsing and entity management. Can validate any version of HTML for which a DTD is available. Free Software.
   http://www.jclark.com/sp/

» SP Instructions
   Windows. Instructions for the Do-it-yourself Offline HTML Validator using SP.
   http://ktmatu.com/info/do-it-yourself-offline-html-validator/

» SWAN: SubWeb Analyzer
   Unix. Generates statistics and finds inconsistencies in a subweb (web site).
   http://www.win.tue.nl/~wstomv/software/swan/swan.html

» WebLight
   Linux, Mac OS X, and Windows. Finds broken links, non-standard HTML, and links between URIs on web sites. Commercial software; free for small sites.
   http://illumit.com/Products/weblight/