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Plone CMS: Open Source Content Management — Plone: Enterprise Level CMS - Free and OpenSource - Community Driven - Secure — 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 Software And Applications →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
creativecommons.org ↗	100 match 292 shared linkers	The commons belongs to us all - Creative Commons	United States~ en	music Weebly	robotsllmsaihumans	emailphone	none
djangoproject.com ↗	70 match 22 shared linkers · same topic	The web framework for perfectionists with deadlines \| Django	en	web-development	robotsllmsaihumans	emailphone	none
python.org ↗	53 match 35 shared linkers · same topic	Welcome to Python.org	en	programming-languages	robotsllmsaihumans	emailphone	none
r-project.org ↗	40 match 8 shared linkers · same topic	R: The R Project for Statistical Computing	en	software-and-applications	robotsllmsaihumans	emailphone	none
postgresql.org ↗	32 match 12 shared linkers · same topic	PostgreSQL: The world's most advanced open source database	en	databases	robotsllmsaihumans	emailphone	none
eff.org ↗	26 match 8 shared linkers · same topic	Electronic Frontier Foundation \| Defending your rights in the digital world	en	information-and-network-security Drupal	robotsllmsaihumans	emailphone	none
apache.org ↗	7 match 15 shared linkers	Welcome to The Apache Software Foundation \| Apache Software Foundation	en	non-profit-organizations	robotsllmsaihumans	emailphone	none
europa.eu ↗	5 match 14 shared linkers	Language selection \| European Union	European Union en	politics Drupal	robotsllmsaihumans	emailphone	none
idempiere.org ↗	70 match shared topic	Community Powered Enterprise - Free Open Source ERP and CRM	en	software-and-applications WordPress	robotsllmsaihumans	emailphone	none
typo3.com ↗	65 match shared topic	TYPO3 - The Open Source Enterprise CMS - TYPO3 CMS	en	software-and-applications TYPO3	robotsllmsaihumans	emailphone	none
cutephp.com ↗	65 match shared topic	CutePHP Content Management	en	technology-and-computing	robotsllmsaihumans	emailphone	none
neos.io ↗	65 match shared topic	Neos CMS - Open Source Content Application Framework - Neos.io	en	software-and-applications	robotsllmsaihumans	emailphone	none
randallcode.com ↗	65 match shared topic	RandallCode™ — Distributed Source Configuration Management Platform	en	software-and-applications	robotsllmsaihumans	emailphone	none
asciidoctor.org ↗	65 match shared topic	Asciidoctor \| A fast, open source text processor and publishing toolchain for converting AsciiDoc content to HTML5, DocBook, PDF, and other formats.	en	technology-and-computing	robotsllmsaihumans	emailphone	none
buttercms.com ↗	65 match shared topic	The Fast & Easy Headless Content Management System \| ButterCMS	en	technology-and-computing ButterCMS	robots llmsaihumans	emailphone	none
questoraclecommunity.org ↗	65 match shared topic	Community and Resources for Oracle's Business Technology Users	en	technology-and-computing WordPress	robotsllmsaihumans	emailphone	none
sourceforge.net ↗	60 match shared topic	Compare B2B Software, Download, & Develop Open Source & Business Software - SourceForge	United States~ en	software-and-applications	robots llmsaihumans	emailphone	none
wpdownloadmanager.com ↗	60 match shared topic	WordPress Download Manager - Best File Management & Digital eCommerce Plugin	en	software-and-applications WordPress	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.