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NumFOCUS: A Nonprofit Supporting Open Code for Better Science — 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 Non Profit Organizations →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
opencollective.com ↗	64 match 12 shared linkers · same topic	Raise, manage and disburse money with full transparency. - Open Collective	en	non-profit-organizations	robotsllmsaihumans	emailphone	none
numpy.org ↗	51 match 8 shared linkers	NumPy	en	technology-and-computing	robotsllmsaihumans	emailphone	none
gitter.im ↗	32 match 10 shared linkers	Gitter — Where developers come to talk.	en	social-networking	robotsllmsaihumans	emailphone	none
python.org ↗	25 match 18 shared linkers	Welcome to Python.org	en	programming-languages	robotsllmsaihumans	emailphone	none
stackoverflow.com ↗	14 match 17 shared linkers	Newest Questions - Stack Overflow	en	technology-and-computing WooCommerce	robotsllmsaihumans	emailphone	none
github.io ↗	9 match 22 shared linkers	GitHub Pages \| Websites for you and your projects, hosted directly from your GitHub repository. Just edit, push, and your changes are live.	en	web-development	robotsllmsaihumans	emailphone	none
meetup.com ↗	8 match 8 shared linkers	Meetup \| Find Local Groups, Events, and Activities Near You	Germany~ en	social-networking	robotsllmsaihumans	emailphone	none
creativecommons.org ↗	3 match 8 shared linkers	The commons belongs to us all - Creative Commons	United States~ en	music Weebly	robotsllmsaihumans	emailphone	none
opentoall.com ↗	65 match shared topic	Open to All - A nonprofit campaign to transform America	en	non-profit-organizations WordPress	robotsllmsaihumans	emailphone	none
candid.org ↗	60 match shared topic	Research nonprofits, funders, and grants \| Candid	en	non-profit-organizations WordPress	robots llmsaihumans	emailphone	none
qgiv.com ↗	60 match shared topic	A Unified Fundraising Platform for Nonprofits \| Bloomerang Fundraising	en	non-profit-organizations	robotsllmsaihumans	emailphone	none
us.org ↗	60 match shared topic	.US.ORG \| The Open Domain for Purpose-Driven U.S. Organizations	United States~ en	non-profit-organizations	robotsllmsaihumans	emailphone	none
typo3.org ↗	60 match shared topic	TYPO3 Project and Governance — Democratic Open Source - TYPO3 Project	en	non-profit-organizations TYPO3	robotsllmsaihumans	emailphone	none
givelively.org ↗	60 match shared topic	Give Lively - A Free Fundraising Platform For Nonprofits	en	non-profit-organizations	robotsllmsaihumans	emailphone	none
greatnonprofits.org ↗	60 match shared topic	GreatNonprofits - Find Top-Rated Nonprofits and Charities	United States~ en	non-profit-organizations	robotsllmsaihumans	emailphone	none
membershiptoolkit.com ↗	60 match shared topic	Software for Nonprofits - Membership Toolkit	en	non-profit-organizations WordPress WooCommerce	robotsllmsaihumans	emailphone	none
givesmart.com ↗	60 match shared topic	Fundraising Software for Nonprofits \| GiveSmart	en	non-profit-organizations WordPress	robotsllmsaihumans	email phone	none
givelify.com ↗	60 match shared topic	Best app to give and collect online donations for your church or nonprofit	en	non-profit-organizations 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.