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Sidleach alternatives & similar sites

Astrophotography by Sid Leach — 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
5cats.org ↗	75 match 2 shared topics	Astrophotography by Mike Halderman	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
jaypotts.net ↗	71 match 2 shared topics	DeepSkyCCD - Astrophotography of Jay Potts	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
adfr.io ↗	70 match 2 shared topics	Frank Adler :: Astrophotography & Web Engineering	en	space-and-astronomy	robotsllmsaihumans	emailphone	full · 20
adambernsteinphotography.com ↗	68 match 2 shared topics	Adam Bernstein Photography	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
taller-astrofoto.cl ↗	63 match 2 shared topics	Taller de astrofotografía para educación y astroturismo	Chile en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
3sistersastronomy.com ↗	62 match 2 shared topics	Home - 3SistersAstronomy	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
thevastreaches.com ↗	61 match 2 shared topics	The Vast Reaches	en	space-and-astronomy Shopify	robots llmsaihumans	emailphone	none
dennisfriedman.com ↗	60 match 2 shared topics	Home	en	space-and-astronomy Weebly	robotsllmsaihumans	emailphone	none
jamesdpearce.com ↗	41 match 1 shared topics	James Pearce - Astrophotographer	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
sat-nd.com ↗	41 match 1 shared topics	Sat ND Telescope and Astrophotography	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
simplesky.app ↗	40 match 1 shared topics	Simple Sky - Professional Astrophotography Planning	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
skastro.net ↗	39 match 1 shared topics	SK Astro - Nottingham Astronomy and Astrophotography	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
meadowlarkridgeobservatory.com ↗	38 match 1 shared topics	Astrophotography - Astrophotography - MeadowlarkRidgeObservatory	en	space-and-astronomy Jimdo	robotsllmsaihumans	emailphone	none
cometography.com ↗	37 match 1 shared topics	Cometography	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astrolab.space ↗	33 match 1 shared topics	Astrolab	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
derastro.com ↗	33 match 1 shared topics	derastro	en	space-and-astronomy Shopify	robots llmsaihumans	emailphone	none
aiastroplanner.com ↗	33 match 1 shared topics	AstroVisor	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
jareksastro.org ↗	33 match 1 shared topics	Jarek's Amateur Astronomy Site	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.