I was curious to know if anyone knew of any free automated tools for testing HTML 4.01? I'm aware of the W3C site, but I'm wondering if there are more out there. In addition, Are there other automated HTML testers out there for purchase?
Yeah. There are automated testing tools, which tests your entire site and give you according to the standards of W3C. The tool called CSE HTML Validator etc.,
Go the URL you can find a lot of tools, even online testing tools, which gives you the sintax errors etc., http://www.softwareqatest.com
On the site there are around 150 different testing tools available, in that one section for HTML Testing tools. They are available for evaluation too.