Is there a tool that will let me validate an entire web site (consisting of thousands of pages) for pages that are XHTML 1.0 Strict?

There used to be a tool at http://nikitathespider.com/ but that no longer exists. They now recommend using http://htmlhelp.com/tools/validator/ but the results stop at 100 pages.

If something like this exists, free or paid, please let me know.