The best YubiCloud alternatives
The rest of Best Multi-Factor Authentication APIs, in this site's order: each with what it costs, where it runs and its record score.
FusionAuth may suit teams managing end users at scale that need configurable authentication and authorization.
It suits developers building authentication into applications, from startups to enterprises.
Authgear suits teams building web or mobile apps that need authentication, identity management or SSO.
LinOTP may suit organizations seeking self-managed multi-factor authentication with directory and database connections, varied token methods, and…
Descope suits teams building B2C or B2B applications that need authentication, user management or authorization.
MojoAuth suits teams building consumer apps that need passwordless customer sign-in across web and mobile.
It suits developers adding phone verification or multi-factor authentication to app account flows.
Stytch suits developers building applications that need identity tools for people, AI agents, or business organizations.
Bird Verify suits teams implementing phone or email verification through APIs or web tools.