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1Auth alternatives & similar sites

1Auth — Authentication Infrastructure for Modern Apps — 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 Information And Network Security →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
2auth.com ↗	72 match 2 shared topics	2Auth — Authenticator & Password Manager	en	software-and-applications	robotsllmsaihumans	emailphone	partial · 8
toqen.app ↗	71 match 2 shared topics	Access-First Authentication System — Toqen	en	software-and-applications	robotsllmsaihumans	emailphone	none
ffides.com ↗	70 match 2 shared topics	FFIDES \| Secure User Authentication	en	information-and-network-security	robotsllmsaihumans	emailphone	none
2fa.beauty ↗	69 match 2 shared topics	2FA — Authenticator and Password Manager	en	information-and-network-security	robotsllmsaihumans	emailphone	partial · 8
2fa.studio ↗	68 match 2 shared topics	2FA Studio — Encrypted Authenticator for iPhone	en	information-and-network-security	robotsllmsaihumans	emailphone	partial · 8
2fas.com ↗	68 match 2 shared topics	2FAS — Authenticator and Password Manager	United States~ en	information-and-network-security	robots llmsaihumans	emailphone	none
2fass.com ↗	68 match 2 shared topics	2FAS — Authenticator and Password Manager	United States~ en	information-and-network-security	robotsllmsaihumans	emailphone	none
corduosecurity.com ↗	67 match 2 shared topics	Corduo Security — Two-Factor Authentication Platform	en	information-and-network-security	robotsllmsaihumans	emailphone	partial · 8
2faa.app ↗	66 match 2 shared topics	2FAA - Free Online 2FA Authenticator & Tools	en	information-and-network-security	robots llmsaihumans	emailphone	none
2fa-x.com ↗	66 match 2 shared topics	Two Factor Authenticator	en	software-and-applications	robotsllmsaihumans	emailphone	none
lastadoo.net ↗	66 match 2 shared topics	LASTA DOO - Modern iOS Applications for Enhanced Security \| VPN & Cleaner Apps	en	software-and-applications	robotsllmsaihumans	emailphone	none
2fashare.com ↗	66 match 2 shared topics	2fashare — shared two-factor auth for teams	en	information-and-network-security	robotsllmsaihumans	emailphone	none
2fa.fast ↗	65 match 2 shared topics	Fast Authenticator — Free Private 2FA & TOTP Code Generator	en	information-and-network-security	robotsllmsaihumans	emailphone	partial · 8
1kosmos.com ↗	65 match 2 shared topics	Identity Verification & Passwordless Solutions \| 1Kosmos	en	information-and-network-security	robotsllmsaihumans	emailphone	none
corma.io ↗	65 match 2 shared topics	License & access governance platform for modern IT teams \| Corma	en	software-and-applications WordPress	robotsllmsaihumans	emailphone	none
sanitiq.app ↗	65 match 2 shared topics	SanitiQ — Deterministic Document Sanitization for Secure Sharing	en	information-and-network-security	robotsllmsaihumans	emailphone	none
1verif.com ↗	64 match 2 shared topics	1verif. Verification-as-a-Service	en	information-and-network-security	robotsllmsaihumans	emailphone	none
torifier.com ↗	64 match 2 shared topics	Torifier - Free torification tool for Windows, Tor bundle	en	information-and-network-security	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.