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Authority Builder alternatives & similar sites

Authority Builder — Register interest — 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 Startups →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
provenradar.com ↗	67 match 1 shared topics	ProvenRadar — SaaS market intelligence for indie builders	en	startups	robots llmsaihumans	emailphone	none
eupreneur.org ↗	66 match 1 shared topics	EUpreneur — builders for a bold, diverse, and united EU.	en	startups	robotsllmsaihumans	emailphone	none
eupreneur.info ↗	66 match 1 shared topics	EUpreneur — builders for a bold, diverse, and united EU.	en	startups	robotsllmsaihumans	emailphone	none
1kleaders.com ↗	66 match 1 shared topics	1000 Leaders: Venture Builder and Community - Invent, Build, Scale	en	startups	robotsllmsaihumans	emailphone	none
skaneifc.com ↗	66 match 1 shared topics	Skåne IFC — Skåne International Founders Club	en	startups	robotsllmsaihumans	emailphone	none
inventorblueprint.com ↗	66 match 1 shared topics	Inventor Blueprint — Patent Product Builder	en	startups	robotsllmsaihumans	emailphone	none
doriotsdisruptors.com ↗	65 match 1 shared topics	Pager — Fast and Flexible Landing Page Builder for Framer	en	startups	robotsllmsaihumans	emailphone	none
0xhashy.com ↗	65 match 1 shared topics	HASHY // SOLO BUILDER // NASHVILLE, TN	en	startups	robotsllmsaihumans	emailphone	none
atxfc.org ↗	65 match 1 shared topics	Austin Founders Community - Trust-Based Coworking for Founders & Builders	United States~ en	startups	robotsllmsaihumans	emailphone	none
interactiontools.com ↗	65 match 1 shared topics	Interactiontools — Smart Entity \| Interactiontools.com	en	startups	robotsllmsaihumans	emailphone	none
skalora.io ↗	64 match 1 shared topics	Skalora — Startup Idea Validation \| Build or Kill in 7 Days	en	startups	robotsllmsaihumans	emailphone	none
smetechleaders.com ↗	64 match 1 shared topics	SME Tech Leaders - Building for the Real Economy	en	startups	robotsllmsaihumans	emailphone	none
hughstephens.com ↗	64 match 1 shared topics	Hugh Stephens — pushes buttons, makes internet	en	startups	robotsllmsaihumans	emailphone	none
asyncyak.com ↗	64 match 1 shared topics	SHIPPED! — A Roguelike Deckbuilder About Startup Life	en	startups	robotsllmsaihumans	emailphone	none
howtostartastartup.app ↗	64 match 1 shared topics	HowToStartaStartup — Startup Intelligence for Founders	en	startups	robotsllmsaihumans	emailphone	none
skilerstudios.com ↗	64 match 1 shared topics	fndd — For ideas in progress	en	startups	robotsllmsaihumans	emailphone	none
atxcto.ai ↗	64 match 1 shared topics	A letter from John Davison — ATXCTO	en	startups	robotsllmsaihumans	emailphone	partial · 8
provinggroundstartups.com ↗	64 match 1 shared topics	Proving Ground \| Build it. Test it. Prove it.	en	startups	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.