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Vertical52 alternatives & similar sites

Vertical52 — 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 Space And Astronomy →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
raumfahrer.net ↗	62 match 1 shared topics	Raumfahrer Net e.V.	de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
das-ufo-phaenomen.de ↗	62 match 1 shared topics	Das UFO-Phänomen - Einleitung	Germany de	space-and-astronomy	robotsllmsaihumans	emailphone	none
rolandbuser.com ↗	62 match 1 shared topics	Professor emeritus Roland Buser – Astronomie und Philosophie	de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
raumtransport.com ↗	61 match 1 shared topics	Raumtransport.com - Neuigkeiten aus Raumfahrt und Luftfahrt	de	space-and-astronomy	robotsllmsaihumans	emailphone	none
curiositas.de ↗	61 match 1 shared topics	Curiositas Startseite	Germany de	space-and-astronomy	robotsllmsaihumans	emailphone	none
deepskywatching.de ↗	61 match 1 shared topics	Deepskywatching - Astrofotografie - Faszinierende Aufnahmen	Germany de	space-and-astronomy WordPress	robots llmsaihumans	emailphone	none
deepskybeobachtung.de ↗	61 match 1 shared topics	deepskybeobachtung.de - Kleine Astronomie Homepage – Home	Germany de	space-and-astronomy Joomla	robotsllmsaihumans	emailphone	none
meine-sternwarte-gartensternwarte.com ↗	61 match 1 shared topics	Grundlagen zur Astronomie für Anfänger und Fortgeschrittene	de	space-and-astronomy	robotsllmsaihumans	emailphone	none
mein-vogelsberg.com ↗	61 match 1 shared topics	Die Gnümies. Willkommen in der Welt der Gnümies: Planet Gnüm	de	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
burda.koeln ↗	61 match 1 shared topics	Doc B's Homepage	de	space-and-astronomy	robotsllmsaihumans	emailphone	none
raumschiff.org ↗	61 match 1 shared topics	Raumschiff - Werkstatt für Astronomie	de	space-and-astronomy WordPress WooCommerce	robots llmsaihumans	emailphone	none
ddoppler.de ↗	61 match 1 shared topics	Infinite's Welt	Germany de	space-and-astronomy	robotsllmsaihumans	emailphone	none
guenther-ruediger.com ↗	61 match 1 shared topics	Günther Rüdiger, Astronom – Photos, stories, limitations	de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
bowhouse-observatory.earth ↗	60 match 1 shared topics	Start - Bowhouse Observatory	de	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
planetarium-schwaz.at ↗	60 match 1 shared topics	Planetarium Schwaz wird Your Dome: der Blick in die Sterne	Austria de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
raumfahrtakteure.net ↗	60 match 1 shared topics	Katalog der deutschen Raumfahrtakteure	de	space-and-astronomy	robotsllmsaihumans	emailphone	none
raumfahrtkatalog.net ↗	60 match 1 shared topics	Katalog der deutschen Raumfahrtakteure	de	space-and-astronomy	robotsllmsaihumans	emailphone	none
ufolens.com ↗	60 match 1 shared topics	Zuhause · UFOs	de	space-and-astronomy	robotsllmsaihumans	emailphone	full · 20

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.