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Flow3Challenge alternatives & similar sites

Flow - The 3rd Challenge - Flow — 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 Environment →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
kawano-zero.com ↗	69 match 1 shared topics	zero challenge	en	environment	robotsllmsaihumans	emailphone	none
hydrochallenge.com ↗	68 match 1 shared topics	HydroChallenge.com — Take the Challenge	en	environment	robotsllmsaihumans	emailphone	none
bonnchallenge.org ↗	68 match 1 shared topics	The Bonn Challenge \| Bonchallenge	en	environment Drupal	robotsllmsaihumans	emailphone	none
reallyregenerative.org ↗	66 match 1 shared topics	Home - The Really Regenerative Centre	en	environment WordPress WooCommerce	robotsllmsaihumans	emailphone	none
quietcleanalliance.org ↗	66 match 1 shared topics	Home - The Quiet Clean Alliance	en	environment WordPress	robotsllmsaihumans	emailphone	none
ejgreenbook.com ↗	65 match 1 shared topics	Homepage - The Environmental Justice Green Book	en	environment WordPress WooCommerce	robotsllmsaihumans	emailphone	none
txpetalproject.com ↗	65 match 1 shared topics	Home - The PETAL Project	en	environment	robotsllmsaihumans	emailphone	none
changenarrativeconsulting.com ↗	65 match 1 shared topics	Home - Change Narrative	en	environment WordPress WooCommerce	robotsllmsaihumans	emailphone	none
cprenorthyorkshire.co.uk ↗	65 match 1 shared topics	CPRE North and East Yorkshire - The countryside charity	United Kingdom en	environment WordPress Reaction Commerce	robotsllmsaihumans	emailphone	none
ccascoe.org ↗	65 match 1 shared topics	Homepage - NATO Climate Change & Security Centre of Excellence	en	environment WordPress WooCommerce	robotsllmsaihumans	emailphone	none
kelpuk.com ↗	65 match 1 shared topics	KELP — Satellite data for environmental and societal challenges	en	environment	robotsllmsaihumans	emailphone	partial · 8
charteredforesters.org ↗	64 match 1 shared topics	Home - The Institute of Chartered Foresters	en	environment WordPress	robotsllmsaihumans	emailphone	none
darent-drips.org.uk ↗	64 match 1 shared topics	DRiPS - The Darent River Preservation Society	United Kingdom en	environment WordPress WooCommerce	robotsllmsaihumans	emailphone	none
balloonsblow.org ↗	64 match 1 shared topics	Balloons Blow - Don't Let Them Go	en	environment WordPress WooCommerce	robotsllmsaihumans	emailphone	none
changeoracle.com ↗	64 match 1 shared topics	Change Oracle - Sustainability & Climate Change Resources	en	environment WordPress	robotsllmsaihumans	emailphone	none
ichangethefuture.org ↗	64 match 1 shared topics	I Change the Future: Main Page	en	environment	robotsllmsaihumans	emailphone	none
ichangethefuture.net ↗	64 match 1 shared topics	I Change the Future: Main Page	en	environment	robotsllmsaihumans	emailphone	none
cecphils.org ↗	64 match 1 shared topics	CEC – Helping communities address environmental challenges	en	environment 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.