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Validator.nu - Nu Html Checker — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Web Development →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
tailwindcss.com ↗	70 match shared topic	Tailwind CSS - Rapidly build modern websites without ever leaving your HTML.	en	web-design-and-html	robotsllmsaihumans	emailphone	none
wpadacompliance.com ↗	70 match shared topic	WP ADA Compliance Check \| Web Accessibility Checker - WP ADA Compliance Check	en	web-development WordPress WooCommerce	robotsllmsaihumans	emailphone	none
formsite.com ↗	70 match shared topic	Formsite - Online Form Builder. Create HTML Forms & Surveys	en	web-development WordPress	robotsllmsaihumans	emailphone	none
dhtml-menu-builder.com ↗	70 match shared topic	Free Drop Down Menu, JavaScript Menu, DHTML Menu, Navigation Bar, Menu Maker, Menu Creator	en	web-development	robotsllmsaihumans	emailphone	none
astemplates.com ↗	70 match shared topic	Best Joomla! Templates \| Professional Wordpress and HTML Themes	en	web-development Joomla VirtueMart	robotsllmsaihumans	emailphone	none
caniuse.com ↗	70 match shared topic	Can I use... Support tables for HTML5, CSS3, etc	en	web-design-and-html	robotsllmsaihumans	emailphone	none
sitepoint.com ↗	70 match shared topic	SitePoint — Learn HTML, CSS, JavaScript, PHP, Ruby & Responsive Design	en	web-development WordPress	robotsllmsaihumans	emailphone	none
gettemplate.com ↗	70 match shared topic	GetTemplate - Free HTML5/CSS3 Bootstrap templates for rapid web development	en	web-design-and-html	robotsllmsaihumans	emailphone	none
asdesigning.com ↗	70 match shared topic	Best Joomla! Templates \| Professional Wordpress and HTML Themes	en	web-design-and-html Joomla VirtueMart	robotsllmsaihumans	emailphone	none
htmx.org ↗	70 match shared topic	</> htmx - high power tools for html	en	web-development	robotsllmsaihumans	emailphone	none
picocss.com ↗	70 match shared topic	Pico CSS • Minimal CSS Framework for semantic HTML	en	web-design-and-html	robotsllmsaihumans	emailphone	none
chartjs.org ↗	70 match shared topic	Chart.js \| Open source HTML5 Charts for your website	en	web-design-and-html	robotsllmsaihumans	emailphone	none
validome.org ↗	70 match shared topic	Validome - A Free Validation Service for HTML and Accessibility - investing.io	en	web-development WordPress	robotsllmsaihumans	emailphone	none
achecks.org ↗	70 match shared topic	ACHECKS Accessibility Checker: Use the #1 Accessibility Checker for Free and Test your Website!	en	web-development WordPress	robotsllmsaihumans	emailphone	none
counters-free.net ↗	70 match shared topic	Free Counters » Counter HTML Codes for free!	en	web-design-and-html phpBB	robotsllmsaihumans	emailphone	none
webestools.com ↗	70 match shared topic	Webestools : free online tools for webmasters services, counters of pages views visits visitors clicks live scripts and tutorials php javascript mysql html css flash photoshop tutorials generators banners buttons images web 2.0 animated images maker guestbook news system survey tchat ajax free webma	en	web-development phpBB	robotsllmsaihumans	emailphone	none
achecker.ca ↗	70 match shared topic	Free Web Accessibility Checker – WCAG Audit \| achecker.ca	Canada en	web-design-and-html	robotsllmsaihumans	emailphone	none
ecommercehtml.com ↗	70 match shared topic	eCommerce HTML Bootstrap 5 UI Kit \| eCommerce HTML	en	web-design-and-html	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.