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Crossref alternatives & similar sites

DOI a CrossRef — 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 Databases →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
cspug.cz ↗	60 match 1 shared topics	O CSPUGu \| www.cspug.cz	Czechia cs	databases Drupal	robotsllmsaihumans	emailphone	none
data.gov.cz ↗	60 match 1 shared topics	Portál o datech České republiky	Czechia cs	databases Drupal	robotsllmsaihumans	emailphone	partial · 1
explain.cz ↗	60 match 1 shared topics	MySQL EXPLAIN v příkladech	Czechia cs	databases	robotsllmsaihumans	emailphone	none
g-tix.cz ↗	60 match 1 shared topics	G-Tix - Analytika nad prostorovými daty	Czechia cs	databases	robotsllmsaihumans	emailphone	none
golemio.cz ↗	60 match 1 shared topics	Golemio: Úvod	Czechia cs	databases	robotsllmsaihumans	emailphone	none
gtix.cz ↗	60 match 1 shared topics	G-Tix - Analytika nad prostorovými daty	Czechia cs	databases	robotsllmsaihumans	emailphone	none
hobimasters.cz ↗	60 match 1 shared topics	HoBi masters.cz \|\| O nás	Czechia cs	databases	robotsllmsaihumans	emailphone	none
idea-envi.cz ↗	60 match 1 shared topics	Home \| IDEA-ENVI	Czechia cs	databases	robotsllmsaihumans	emailphone	none
ind-ex.cz ↗	60 match 1 shared topics	IND s.r.o. Home	Czechia cs	databases WordPress	robotsllmsaihumans	emailphone	none
inovatika.cz ↗	60 match 1 shared topics	INOVATIKA	Czechia cs	databases	robotsllmsaihumans	emailphone	none
isvavai.cz ↗	60 match 1 shared topics	Veřejně přístupná data IS VaVaI	Czechia cs	databases	robotsllmsaihumans	emailphone	none
janzednicek.cz ↗	60 match 1 shared topics	Business Intelligence portál	Czechia cs	databases WordPress	robotsllmsaihumans	emailphone	none
aaainfo.net ↗	60 match 1 shared topics	DATABÁZE FIREM - marketingové informace o firmách	cs	databases	robotsllmsaihumans	emailphone	none
digi-architekti.org ↗	60 match 1 shared topics	Digitální architekti \| Smysluplná analytika - srovnáme data do latě	cs	databases WordPress WooCommerce	robotsllmsaihumans	emailphone	none
digiarchitekti.org ↗	60 match 1 shared topics	Digitální architekti \| Smysluplná analytika - srovnáme data do latě	cs	databases WordPress WooCommerce	robotsllmsaihumans	emailphone	none
digitalni-architekti.org ↗	60 match 1 shared topics	Digitální architekti \| Smysluplná analytika - srovnáme data do latě	cs	databases WordPress WooCommerce	robotsllmsaihumans	emailphone	none
digitalniarchitekti.org ↗	60 match 1 shared topics	Digitální architekti \| Smysluplná analytika - srovnáme data do latě	cs	databases WordPress WooCommerce	robotsllmsaihumans	emailphone	none
czebox.cz ↗	30 match 1 shared topics	Datové schránky	Czechia cs	data-storage-and-warehousing	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.