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P4 Authentication Service — 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 Software And Applications →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
click-there.com ↗	85 match 2 shared topics	P4 Authentication Service	en	software-and-applications	robotsllmsaihumans	emailphone	none
clk-cl.com ↗	85 match 2 shared topics	P4 Authentication Service	en	software-and-applications	robotsllmsaihumans	emailphone	none
clk-1.com ↗	85 match 2 shared topics	P4 Authentication Service	en	software-and-applications	robotsllmsaihumans	emailphone	none
4jvo.com ↗	85 match 2 shared topics	P4 Authentication Service	en	software-and-applications	robotsllmsaihumans	emailphone	none
rkapply.com ↗	85 match 2 shared topics	P4 Authentication Service	en	software-and-applications	robotsllmsaihumans	emailphone	none
id-able.com ↗	72 match 2 shared topics	IDABLE - Biometric Authentication API	US~ en	software-and-applications	robotsllmsaihumans	email phone	none
zalter.com ↗	71 match 2 shared topics	Zalter - Passwordless authentication system	en	information-and-network-security	robotsllmsaihumans	emailphone	none
2fa-x.com ↗	70 match 2 shared topics	Two Factor Authenticator	en	software-and-applications	robotsllmsaihumans	emailphone	none
idanalyze.com ↗	69 match 2 shared topics	DESKO ID\|Analyze® – Authentication software \| DESKO GmbH	DE~ en	software-and-applications ProcessWire	robotsllmsaihumans	email phone	none
zapauth.com ↗	68 match 2 shared topics	ZapAuth – Secure SMS Authentication & OTP Verification API	en	information-and-network-security	robotsllmsaihumans	emailphone	none
activatenow.com ↗	68 match 2 shared topics	Software Activation Service - ActivateNow.com	en	software-and-applications	robotsllmsaihumans	emailphone	none
1verif.com ↗	68 match 2 shared topics	1verif. Verification-as-a-Service	en	information-and-network-security	robotsllmsaihumans	emailphone	none
2auth.com ↗	67 match 2 shared topics	2Auth — Authenticator & Password Manager	en	software-and-applications	robotsllmsaihumans	emailphone	partial · 8
2fass.com ↗	67 match 2 shared topics	2FAS — Authenticator and Password Manager	US~ en	information-and-network-security	robotsllmsaihumans	emailphone	none
2fas.com ↗	67 match 2 shared topics	2FAS — Authenticator and Password Manager	US~ en	information-and-network-security	robots llmsaihumans	emailphone	none
kycaid.com ↗	67 match 2 shared topics	KYC Verification & Compliance Service - KYCAID.com	en	information-and-network-security	robots llmsaihumans	emailphone	none
desktop-2fa.org ↗	67 match 2 shared topics	desktop‑2fa — Offline TOTP Authenticator	en	information-and-network-security	robotsllmsaihumans	emailphone	partial · 8
2faa.app ↗	67 match 2 shared topics	2FAA - Free Online 2FA Authenticator & Tools	en	information-and-network-security	robots llmsaihumans	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.