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Offworldproject alternatives & similar sites

Off-World Project — 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
saturne-project.com ↗	68 match 1 shared topics	Saturne Project \| Home	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
marsworld.com ↗	65 match 1 shared topics	Marsworld	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
declassified.ca ↗	64 match 1 shared topics	DECLASSIFIED - Aliens, UFOs & Secret Government Projects	Canada en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
singularengenhariaeletrica.com ↗	63 match 1 shared topics	SINGULAR · PROJETOS E OBRAS ELÉTRICAS	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
jcnastro.net ↗	63 match 1 shared topics	JCN Astro Jottings – A place to publish info about my astronomy projects	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
satellitemag.com ↗	62 match 1 shared topics	Satellite - monitoring the world	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
1norton.com ↗	62 match 1 shared topics	Chuck Norton – Citizen of the World	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
beyondgravity.com ↗	62 match 1 shared topics	We help humanity explore the world and beyond. \| Beyond Gravity	en	space-and-astronomy Drupal	robotsllmsaihumans	emailphone	none
drevanoyola.net ↗	62 match 1 shared topics	Dr Eva Noyola – An astronomer going to the real world	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
gaia-aerospace.com ↗	62 match 1 shared topics	GAIA Aerospace - Worlds First Reusable AirLaunch System	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
garylouis.com ↗	62 match 1 shared topics	Gary louis – Welcome to my Blog It is out of this world	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
satalites.com ↗	61 match 1 shared topics	Unlocking the Power of Satellites: Revolutionizing Our World	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
ovnisearch.com ↗	61 match 1 shared topics	OVNISEARCH.COM - World's Most Comprehensive UAP Database & Search Portal	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
theufodatabase.com ↗	61 match 1 shared topics	The UFO Database: The World's Trusted Database of Unidentified Phenomenon	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
spacegold.co ↗	61 match 1 shared topics	SpaceGold – Providing Resources From Space	Colombia en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
simplesky.app ↗	61 match 1 shared topics	Simple Sky - Professional Astrophotography Planning	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
aurorabase.ca ↗	61 match 1 shared topics	AuroraBase: Exploring Northern Lights & Space Science	Canada en	space-and-astronomy	robotsllmsaihumans	emailphone	none
wayfarther.com ↗	61 match 1 shared topics	The Wayfarther Catalog — Established, Reluctantly	en	space-and-astronomy	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.