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Protocol S alternatives & similar sites

Protocol — Payment Ecosystem — 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 Financial Industry →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
pspmatcher.com ↗	68 match 1 shared topics	PSPmatcher.com — Payment Industry Knowledge Base	en	financial-industry	robots llmsaihumans	emailphone	none
atlaspayment.org ↗	67 match 1 shared topics	AtlasPayment — Payment Infrastructure for High-Risk Businesses	en	financial-industry	robotsllmsaihumans	emailphone	none
nemspay.com ↗	66 match 1 shared topics	NEMS - Global Payment Solutions	United States~ en	financial-industry	robotsllmsaihumans	email phone	none
nemerchant.com ↗	66 match 1 shared topics	NEMS - Global Payment Solutions	United States~ en	financial-industry	robotsllmsaihumans	email phone	none
mylesndlovu.com ↗	66 match 1 shared topics	Myles Ndlovu — Fintech, Algorithmic Trading, Crypto & Payment Infrastructure	en	financial-industry	robotsllmsaihumans	emailphone	none
volzix.com ↗	66 match 1 shared topics	Volzix - Your Trusted Payment Partner	en	financial-industry	robotsllmsaihumans	email phone	partial · 8
myresearchpay.com ↗	66 match 1 shared topics	ResearchPay — Payments advisory for research products	en	financial-industry	robotsllmsaihumans	emailphone	none
apexx.global ↗	66 match 1 shared topics	Global Payment Solutions \| APEXX Global	en	financial-industry Gatsby	robotsllmsaihumans	emailphone	none
cavalierpay.com ↗	66 match 1 shared topics	Cavalier Pay — The New Standard for Noble Digital Payments	en	financial-industry	robotsllmsaihumans	emailphone	none
dotcom-payment.com ↗	66 match 1 shared topics	Dotcom-payment	en	financial-industry	robotsllmsaihumans	emailphone	none
atriumpay.net ↗	65 match 1 shared topics	Atrium - Global Crypto Payment Gateway \| Secure Blockchain Payments	en	financial-industry	robotsllmsaihumans	emailphone	none
pspark.io ↗	65 match 1 shared topics	Crypto payments - PSPark	en	financial-industry WordPress	robotsllmsaihumans	emailphone	none
cryptopayment.solutions ↗	65 match 1 shared topics	Cryptopayment Solutions \| Gateway	en	financial-industry	robotsllmsaihumans	emailphone	none
bankingcircles.eu ↗	65 match 1 shared topics	Banking Circle \| Payments, FX & Infrastructure	European Union en	financial-industry WordPress WooCommerce	robotsllmsaihumans	emailphone	none
interlinkfx.com ↗	65 match 1 shared topics	InterlinkFX: UK & EU Cross-Border Payment Solutions	en	financial-industry	robotsllmsaihumans	emailphone	none
catpay.com ↗	65 match 1 shared topics	Crypto Payment Gateway That You Can Trust - GatewayCrypto	en	financial-industry	robotsllmsaihumans	emailphone	none
gatewaycrypto-app.com ↗	65 match 1 shared topics	Crypto Payment Gateway That You Can Trust - GatewayCrypto	en	financial-industry	robotsllmsaihumans	emailphone	none
gatewaycryptoteam.com ↗	65 match 1 shared topics	Crypto Payment Gateway That You Can Trust - GatewayCrypto	en	financial-industry	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.