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Whichcms alternatives & similar sites

Detect which CMS a site is using - What CMS? — 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 Technology And Computing →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
whatcms.org ↗	85 match shared topic	Detect which CMS a site is using - What CMS?	United States~ en	technology-and-computing	robotsllmsaihumans	emailphone	none
thatdot.com ↗	67 match shared topic	thatDot — Detect in milliseconds what others miss entirely	en	technology-and-computing	robotsllmsaihumans	emailphone	none
cookiesandyou.com ↗	61 match shared topic	What are cookies? \| Cookies & You	en	technology-and-computing	robotsllmsaihumans	emailphone	none
concrete5.org ↗	61 match shared topic	Concrete CMS is a Free and Open Source Content Management System for Teams	en	technology-and-computing Concrete5	robotsllmsaihumans	emailphone	none
modelcontextprotocol.io ↗	61 match shared topic	What is the Model Context Protocol (MCP)? - Model Context Protocol	en	technology-and-computing	robots llmsaihumans	emailphone	none
getkirby.com ↗	61 match shared topic	Kirby is the CMS that adapts to you	en	technology-and-computing Kirby	robots llmsaihumans	emailphone	none
cmsmadesimple.org ↗	61 match shared topic	Open Source Content Management System : : CMS Made Simple	en	technology-and-computing	robotsllmsaihumans	emailphone	none
php-fusion.co.uk ↗	61 match shared topic	Home - Official Home of the PHPFusion CMS	United Kingdom en	technology-and-computing	robotsllmsaihumans	emailphone	none
liferay.com ↗	61 match shared topic	Headless & Composable DXP \| AI, CMS, DAM, Portals, Commerce - Liferay DXP	en	technology-and-computing Liferay	robotsllmsaihumans	emailphone	none
demilked.com ↗	61 match shared topic	Demilked — Remove the noise. Keep what works.	en	technology-and-computing Gumroad	robotsllmsaihumans	emailphone	none
expressionengine.com ↗	61 match shared topic	ExpressionEngine — The Best Open Source CMS	en	technology-and-computing	robotsllmsaihumans	emailphone	none
qrfy.io ↗	61 match shared topic	What is qrfy.io?	en	technology-and-computing	robotsllmsaihumans	emailphone	none
openapis.org ↗	61 match shared topic	OpenAPI Initiative – The OpenAPI Initiative provides an open source, technical community, within which industry participants may easily contribute to building a vendor-neutral, portable and an open specification for providing technical metadata for REST APIs – the “OpenAPI Specification”	en	technology-and-computing WordPress	robotsllmsaihumans	emailphone	none
phpfusion.com ↗	61 match shared topic	Home - Official Home of the PHPFusion CMS	en	technology-and-computing	robotsllmsaihumans	emailphone	none
tina.io ↗	61 match shared topic	TinaCMS – GitHub’s #1 Headless CMS, powered by an awesome Visual Editor for Markdown	en	technology-and-computing	robotsllmsaihumans	emailphone	none
ellislab.com ↗	61 match shared topic	ExpressionEngine — The Best Open Source CMS	en	technology-and-computing	robotsllmsaihumans	emailphone	none
datocms.com ↗	61 match shared topic	length in draft mode --> The headless CMS that your team will love — DatoCMS	en	technology-and-computing DatoCMS	robotsllmsaihumans	emailphone	none
wagtail.org ↗	61 match shared topic	Wagtail CMS - Django Content Management System	en	technology-and-computing	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.