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Alien Echo alternatives & similar sites

Alien Echo — 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
aliendocs.org ↗	71 match 1 shared topics	Alien Docs	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
tenthalien.com ↗	71 match 1 shared topics	Alien Grey	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
alienvisitors.org ↗	68 match 1 shared topics	Alien Visitors	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
alienvisitors.net ↗	68 match 1 shared topics	Alien Visitors	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
alienorigin.io ↗	67 match 1 shared topics	Alien Origin Home	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
alienbill.net ↗	65 match 1 shared topics	Alien Bill UK – Cosmic	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
earthtoaliens.org ↗	65 match 1 shared topics	Earth to Aliens	United States~ en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
alienmanagementsystem.com ↗	65 match 1 shared topics	Aliens and Stars	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
whenwillthealiensarrive.com ↗	63 match 1 shared topics	When Will the Aliens Arrive?	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
dcalienreport.com ↗	63 match 1 shared topics	DC Alien Report – Documenting High Strangeness	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
starfleet.diy ↗	63 match 1 shared topics	STARFLEET.DIY - Reverse Engineering Alien Technology	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
alien-ufo-pictures.com ↗	62 match 1 shared topics	Alien Pictures, Ufo pictures, Ufo Videos, alien sightings	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
3iatlas.life ↗	62 match 1 shared topics	ATLAS Flyby — Aliens or Stupid Rock?	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
alienconspiracytheories.com ↗	62 match 1 shared topics	Welcome to AlienConspiracyTheories.com	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
stillquestioningufosaliensdragons.com ↗	62 match 1 shared topics	Still Questioning UFOs, Aliens, Dragons	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
alienfiles.net ↗	62 match 1 shared topics	AlienFiles.net // Alpha — Just the Facts	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
earthlingscursedknowledge.com ↗	62 match 1 shared topics	Forbidden Aliens knowledge of good and evil	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
earthletters.com ↗	62 match 1 shared topics	Earth Letters — Travel Notes From A Space Alien	en	space-and-astronomy 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.