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Joinopenroom alternatives & similar sites

Open Room - A trusted room for people building on their own — 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
joincolmore.com ↗	68 match 1 shared topics	Colmore — Stop Building Alone	en	startups	robotsllmsaihumans	emailphone	none
joinyden.com ↗	67 match 1 shared topics	YDEN - Young Founders Building the Future	en	startups	robotsllmsaihumans	emailphone	none
jointhebes.com ↗	67 match 1 shared topics	The Black Entrepreneurship Society \| Built for Black Founders	en	startups	robotsllmsaihumans	emailphone	none
samooh.com ↗	66 match 1 shared topics	Samooh — Indian Founders Building Global Products	en	startups	robots llmsaihumans	emailphone	none
sankethiran.com ↗	66 match 1 shared topics	Sanket Hiran \| Designer & Builder for Founders	en	startups	robotsllmsaihumans	emailphone	none
joingreenroom.com ↗	65 match 1 shared topics	Green Room	en	startups	robotsllmsaihumans	emailphone	none
zubolin.com ↗	65 match 1 shared topics	Zubolin — Venture Studio Building Ecosystems for India	en	startups	robotsllmsaihumans	emailphone	none
pivtank.com ↗	65 match 1 shared topics	PivTank — Premium Strategy Sessions for Founders	en	startups	robotsllmsaihumans	emailphone	none
dennisleoca.com ↗	65 match 1 shared topics	Dennis Leoca \| Building Freedom One Product at a Time	en	startups	robotsllmsaihumans	emailphone	none
digitalventurefactory.com ↗	65 match 1 shared topics	Digital Venture Factory \| Building & Scaling Ventures	en	startups WordPress	robotsllmsaihumans	emailphone	none
joenangle.com ↗	65 match 1 shared topics	Joe Nangle — Venture Building & Climate Tech	US~ en	startups	robotsllmsaihumans	emailphone	none
joinfutureforum.com ↗	65 match 1 shared topics	Future Forum - The Private network for early-stage founders and operators.	en	startups	robotsllmsaihumans	emailphone	none
5starplanet.org ↗	65 match 1 shared topics	5-Star Planet: The Profit-Share Model for People & Planet	en	startups	robotsllmsaihumans	emailphone	none
5-star-planet.com ↗	65 match 1 shared topics	5-Star Planet: The Profit-Share Model for People & Planet	en	startups	robotsllmsaihumans	emailphone	none
joinseriesv.com ↗	65 match 1 shared topics	Series V - The network for the fastest-growing startups.	en	startups	robotsllmsaihumans	emailphone	none
designqube.com ↗	65 match 1 shared topics	DesignQube - Building the Future of SaaS	en	startups	robotsllmsaihumans	emailphone	none
dripdesigns.io ↗	65 match 1 shared topics	DRIP DESIGNS \| Your Trusted Design Partner for Startups & Creative Agencies	en	startups	robotsllmsaihumans	emailphone	none
joinaxum.com ↗	65 match 1 shared topics	Axum — The Private Community for Faith-Driven Founders	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.