FusionAuth may suit teams managing end users at scale that need configurable authentication and authorization.
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Best Multi-Factor Authentication APIs 2026
Every product here is ranked by Samsung Mobile US Press's record score: what its maker publishes about it, where it runs (Android first), whether it is free to try, and how recently the facts were read.
02
OpenOTP Authentication Server
AndroidiPhone & iPadWeb+5 Record6.3 Visit
03
SuperTokens
It suits developers building authentication into applications, from startups to enterprises.
AndroidiPhone & iPadWeb+3 Record6.2 Visit
04
Authgear
Authgear suits teams building web or mobile apps that need authentication, identity management or SSO.
AndroidiPhone & iPadWeb+2 Record6.0 Visit
05
LinOTP
LinOTP may suit organizations seeking self-managed multi-factor authentication with directory and database connections, varied token methods, and deployment choices.
AndroidiPhone & iPadWeb+4 Record5.9 Visit
8
Descope
AndroidiPhone & iPadWeb+2 $249 usage-based Record5.4 Visit Descope suits teams building B2C or B2B applications that need authentication, user management or authorization.
9
MojoAuth
AndroidiPhone & iPadWeb+2 $120 a month Record5.3 Visit MojoAuth suits teams building consumer apps that need passwordless customer sign-in across web and mobile.
10
Sinch Verification API
AndroidiPhone & iPadWeb+1 Free plan Record5.1 Visit It suits developers adding phone verification or multi-factor authentication to app account flows.
11
Stytch
AndroidiPhone & iPadWeb+1 Free plan Record4.9 Visit Stytch suits developers building applications that need identity tools for people, AI agents, or business organizations.
16
Bird Verify
WebAPI Free plan Record4.4 Visit Bird Verify suits teams implementing phone or email verification through APIs or web tools.
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