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Monstra alternatives & similar sites

Monstra - The Fast, Extensible, and Easy Flat File Open Source Content Management System — 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
concretecms.org ↗	75 match shared topic	Concrete CMS is a free open source content management system	en	web-development Concrete5	robotsllmsaihumans	emailphone	none
get-simple.info ↗	70 match shared topic	GetSimple Content Management System \| GetSimpleCMS	en	software-and-applications	robotsllmsaihumans	emailphone	none
exware.com ↗	65 match shared topic	Exware - Association Management Software, Event Management Software, Content Management - Canada	en	software-and-applications	robotsllmsaihumans	emailphone	none
userspice.com ↗	65 match shared topic	UserSpice — Open Source PHP User Management Framework	en	web-development	robotsllmsaihumans	emailphone	none
tanstack.com ↗	60 match shared topic	TanStack \| The open-source application stack for the web.	en	web-development	robots llmsaihumans	emailphone	partial · 8
goatcounter.com ↗	60 match shared topic	GoatCounter – open source web analytics	en	web-development	robotsllmsaihumans	emailphone	none
picocms.org ↗	60 match shared topic	Pico - A stupidly simple, blazing fast, flat file CMS.	en	web-development	robotsllmsaihumans	emailphone	none
osclass-classifieds.com ↗	60 match shared topic	Open-Source Classifieds Software for Marketplaces \| Osclass	en	software-and-applications	robots llmsaihumans	emailphone	none
brackets.io ↗	60 match shared topic	Brackets — Now Phoenix Code \| Free Open Source Code Editor with Live Preview	en	web-development	robotsllmsaihumans	emailphone	none
e107.org ↗	60 match shared topic	e107 Bootstrap CMS Open Source	en	web-development	robotsllmsaihumans	emailphone	partial · 4
question2answer.org ↗	60 match shared topic	Question2Answer - Free Open Source Q&A Software for PHP	en	software-and-applications	robotsllmsaihumans	emailphone	none
hiveku.com ↗	60 match shared topic	Hiveku - Website Management Platform	en	software-and-applications	robotsllmsaihumans	emailphone	none
deque.com ↗	60 match shared topic	Deque Systems: Web Accessibility Software, Services & Training	en	web-development WordPress	robotsllmsaihumans	emailphone	none
plasmic.app ↗	60 match shared topic	Plasmic \| Build powerful apps fast— without the limits	en	web-development	robotsllmsaihumans	emailphone	none
localizejs.com ↗	60 match shared topic	Translation and Localization Management Platform for Any App or Website \| Localize	en	software-and-applications	robotsllmsaihumans	emailphone	none
wordpress.org ↗	55 match shared topic	Blog Tool, Publishing Platform, and CMS – WordPress.org	en	software-and-applications WordPress	robotsllmsaihumans	emailphone	none
appsdeveloper.ca ↗	60 match shared topic	Apps Developer Dot Ca Inc: Fast, Scalable PWA Solutions	Canada en	web-development	robotsllmsaihumans	emailphone	none
awstats.org ↗	60 match shared topic	AWStats - Open Source Log File Analyzer for advanced statistics (GNU GPL)	en	web-development	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.