HTML Kit is a full-featured editor for HTML, XHTML, XML, CSS, JavaScript, PHP and other text files.
(http://www.htmlkit.com/i/g/cached/gen_180x100_blurb_wide_toolsingerman1.png)
HTML Tidy for creating standards-compliant web pages is one of hundreds of plugins available for it.
Link to Free Download: HTML Kit – Editor for HTML, XHTML & XML (http://www.theinfostride.com/forum/index.php?action=downloads;sa=view;down=133)