CSE HTML Validator Lite
CSE HTML Validator Lite is a fast, easy to use, and free HTML development tool for Microsoft Windows that helps you create syntactically correct HTML and XHTML. You'll be surprised how many problems may exist in your HTML, even if it was made with a WYSIWYG editor or automatic HTML generator. ... CSE HTML Validator will help you quickly locate and fix HTML problems so that your documents are easily viewed by a variety of web browsers. ... You can even fix your documents inside of HTML Validator by using the integrated editor.
ftp://ftp.htmlvalidator.com/pub/htmlval/cselite.exe - 4Mb - Download - Screenshot

HTML Link Validator
HTML Link Validator is a professional tool for checking web pages for broken links, on a web server or on your local computer. Whether a novice or an experienced webmaster, you should always test your web site for broken links. There are many reasons why a link may be broken. ... Fortunately, unlike some other validators, HTML Link Validator keeps case awareness in mind. ... HTML Link Validator can also create various file lists and find unused (orphaned) files on a web site. ... Unlike some other validators, HTML Link Validator has no limitation on number of links and pages it can validate.
http://lithopssoft.com/hlv/hlvsetup.exe - 912Kb - Download - Screenshot

CSE HTML Validator Professional
CSE HTML Validator Professional is a fast, powerful, highly user configurable, and easy to use professional web development tool that helps you create syntactically correct and accessible HTML, XHTML, and CSS documents. The new HTML Tidy Tool can even fix HTML and XHTML (and more). ... The latest version of CSE HTML Validator includes accessibility checking (Section 508 and WCAG), CSS syntax checking, link checking, spell checking, a powerful, easy to use, integrated HTML/text editor, an integrated web browser (browse the web while you validate the pages), and a powerful Batch Wizard that...
ftp://ftp.htmlvalidator.com/pub/htmlval/csesetup.exe - 4Mb - Download - Screenshot

Web Link Validator
Web Link Validator is a powerful, comprehensive site management and link checker tool that helps webmasters automate the process of web site testing. The software performs a thorough analysis of Web site pages and includes the following checks: finds broken links (including those using... Other Web Link Validator features include the ability to check a copy of a Web site saved on a local hard drive, individual settings for each site, automatic e-mailing of the site reports, an alternative Internet Explorer-based verification engine and a customizable program interface.
http://www.relsoftware.com/wlv/download/wlvsetup.exe - 2Mb - Download - Screenshot

Rapid CSS Editor 2006
With Rapid CSS Editor you can quickly and easily create and edit cascading style sheets of any size and complexity. You can write the style sheet code manually or let the program do it for you. In each case it is easy because of various helpful features, including CSS validator, auto complete... Rapid CSS Editor is also an HTML editor and it makes CSS powered HTML editing a snap. ... Rapid CSS Editor is designed to save your time and make the job easier. ... Results are shown instantly using built-in preview.
http://www.blumentals.net/download/rapidcss7.exe - 4Mb - Download - Screenshot

Total Validator Tool
Why use separate validation tools to check your web pages when you only need one? The Total Validator Tool performs the most important validations on your web pages: True (X)HTML validation against published W3C/ISO DTDs; accessibility validation against the W3C and US Section 508 guidelines;... You should ensure your sites conform to the W3C WAI Accessibility Guidelines, (and that also means strictly W3C validated HTML), or US Section 508 standard, if you want your site to be accessible to all.
http://www.totalvalidator.com/downloads/TotalValidator_F200.exe - 2Mb - Download - Screenshot

EngInSite CSS Editor
EngInSite CSS Editor is a fully-integrated Cascading Style Sheets (CSS) development tool, designed to save you time and unleash your creativity. You will appreciate such features as the Tag Editor, the compatibility and syntax check, the integration with the W3C HTML Validator and the... And, don't forget to check the compliance of your style sheet against different browsers and standards and preview your HTML page in the different browsers - this great tool will help you in that work too. ... Concentrate on the look and feel of your web site and let EngInSite CSS Editor manage all the CSS...
http://luckasoft.com/download/css_editor_setup.exe - 3Mb - Download - Screenshot

Conde SEO Tool
Submit Your website to more than 1.
http://www.condehq.com/condeSEO.exe - 3Mb - Download - Screenshot

PlusPAD
PlusPAD is an advanced PAD file generator, editor and validator. Includes a solid project based management of the PAD files, embedded validation, multiple languages, fast file processing and esthetic GUI. PlusPAD is able to generate 1 or multiple PAD files, save the formatted html version of the... Multiple views can be changed by a click of the mouse.
http://www.olvio.com/webmodules/downloads/files/pluspadsetup.exe - 539Kb - Download - Screenshot

Web Form Processor and Validator
Allows you to easily make the forms on your website work. There is absolutely no need for programming, installing CGI scripts, or editing HTML code. You can easily update any HTML page to include powerful form processing that can automatically email you the results of each form submission,... Works with any form created in any HTML editor and also works with any webserver platform (Unix, Windows, Linux, etc. ... ). ... Getting a form to work typically takes only about 5 minutes. ... FormBreeze also lets you visually set up powerful field validation for your forms so that you can...
http://www.formbreeze.com/formbreeze.exe - 781Kb - Download - Screenshot