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Jcrocket alternatives & similar sites

John Coker's Rockets and Rocketry — 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
jcrocket.net ↗	100 match 1 shared topics	John Coker's Rockets and Rocketry	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
jcrocket.org ↗	100 match 1 shared topics	John Coker's Rockets and Rocketry	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
jamesyawn.net ↗	67 match 1 shared topics	Recrystallized Rocketry	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
jamesyawn.com ↗	67 match 1 shared topics	Recrystallized Rocketry	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
outrocket.com ↗	66 match 1 shared topics	OutRocket — Rocket launches	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
waterockets.com ↗	66 match 1 shared topics	Water Rockets from AntiGravity Research. Buy water rockets	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	email phone	none
agilerocketry.com ↗	65 match 1 shared topics	agilerockets	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
mars-moon.com ↗	64 match 1 shared topics	Mars and Moon	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
apollosaturn.com ↗	63 match 1 shared topics	John Duncan	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
bbastrodesigns.com ↗	63 match 1 shared topics	Mel Bartels and BBAstroDesigns	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
fornaxmounts.ca ↗	62 match 1 shared topics	Bringing Fornax Mounts and sky trackers to Canada & USA	Canada en	space-and-astronomy	robotsllmsaihumans	emailphone	none
ahasaki.com ↗	62 match 1 shared topics	Ahasaki – Seeing stars and planets better, economically.	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
3iatlasapp.com ↗	62 match 1 shared topics	3i Atlas: UAP News, NASA Alerts & Live Rocket Launch Tracker	en	space-and-astronomy	robots llmsaihumans	emailphone	none
mccarthyobservatory.org ↗	62 match 1 shared topics	John J. McCarthy Observatory	United States~ en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
100karman.com ↗	62 match 1 shared topics	UNOLL — United Nations Office of Launches and Landings	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
100karmanline.com ↗	62 match 1 shared topics	UNOLL — United Nations Office of Launches and Landings	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
100kmup.com ↗	62 match 1 shared topics	UNOLL — United Nations Office of Launches and Landings	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
1kmup.com ↗	62 match 1 shared topics	UNOLL — United Nations Office of Launches and Landings	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.