FusionAuth may suit teams managing end users at scale that need configurable authentication and authorization.
Free plan Free trial From $162 a month, billed yearly AndroidiPhone & iPadWebWindowsMacLinux+2
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Best Multi-Factor Authentication APIs 2026
Facts read 20 Sep 2026 – 15 Oct 2026
Teams can use multi-factor authentication APIs to bring passkeys, push checks, TOTP, SMS codes or email codes into sign-in processes. Buyers can use this list to review pricing plans, supported platforms, SDK language options and webhook availability.
The standings: top 10
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 FusionAuth | FusionAuth may suit teams managing end users at scale that need configurable authentication and authorization. | 6.6 | $162 a month, billed yearly | Free plan | Android, iPhone & iPad, Web, Windows | 14 Oct 2026 |
| 02 OpenOTP Authentication Server | 6.2 | Free plan | Free plan | Android, iPhone & iPad, Web, Windows | 30 Sep 2026 | |
| 03 SuperTokens | It suits developers building authentication into applications, from startups to enterprises. | 6.2 | Free plan | Free plan | Android, iPhone & iPad, Web, Linux | 15 Oct 2026 |
| 04 Authgear | Authgear suits teams building web or mobile apps that need authentication, identity management or SSO. | 6.0 | $50 usage-based | Free plan | Android, iPhone & iPad, Web, API | 15 Oct 2026 |
| 05 LinOTP | LinOTP may suit organizations seeking self-managed multi-factor authentication with directory and database connections, varied token methods, and deployment choices. | 5.9 | Free plan | Free plan | Android, iPhone & iPad, Web, Windows | 4 Oct 2026 |
| 06 miniOrange Multi-Factor Authentication | 5.9 | $2 a month | Free plan | Web, Windows, Mac, Linux | 1 Oct 2026 | |
| 07 privacyIDEA | 5.7 | €165 a month | Free plan | Android, iPhone & iPad, Web, Windows | 7 Oct 2026 | |
| 08 Descope | Descope suits teams building B2C or B2B applications that need authentication, user management or authorization. | 5.3 | $249 usage-based | Free plan | Android, iPhone & iPad, Web, API | 30 Sep 2026 |
| 09 MojoAuth | MojoAuth suits teams building consumer apps that need passwordless customer sign-in across web and mobile. | 5.2 | $120 a month | Free plan | Android, iPhone & iPad, Web, API | 4 Oct 2026 |
| 10 Sinch Verification API | It suits developers adding phone verification or multi-factor authentication to app account flows. | 5.1 | Free plan | Free plan | Android, iPhone & iPad, Web, API | 7 Oct 2026 |
No ranking basis is published for this page. Compare the listed capabilities and maker pricing notes directly, including free plans, trials and paid starting prices.
02
OpenOTP Authentication Server
AndroidiPhone & iPadWeb+5 Record6.2 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 Record5.3 Visit Descope suits teams building B2C or B2B applications that need authentication, user management or authorization.
9
MojoAuth
AndroidiPhone & iPadWeb+2 $120 a month Record5.2 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 Record4.3 Visit Bird Verify suits teams implementing phone or email verification through APIs or web tools.
Before you choose
Compare plans and starting prices
Pricing notes include free plans, freemium offers, paid plans and pricing on request. Authgear offers free access with paid use starting at $50 per month, while FusionAuth starts paid access at $162 per month with annual billing.
Trial terms vary. A 30-day trial is listed for Authsignal, Infobip 2FA offers 60 days, and LoginRadius offers 14 days.
Match the verification methods
The entries can be checked for passkeys, push verification, TOTP, SMS OTP and email OTP. Choose methods that correspond to the sign-in flow you intend to create.
Check deployment platforms
The listed deployment options span web, API, Android, iOS, self-hosted and Linux. Make sure the environment you will run or connect is among the supported platforms before selecting a tool.
Review SDKs and webhooks
This comparison records available SDK languages and webhook support. Check whether an entry supports your application's language and integration event needs.
Consider licence and trial access
Some entries provide open-source code, and LinOTP is identified as open source. If code inspection or modification matters, review the licence for the tool.
Some entries have free plans, while others offer a trial. Check the applicable terms before moving from evaluation to production.
Questions
Do these APIs offer free plans?
Yes. Free plans appear among the listed items, including Authgear, Descope, FusionAuth, LinOTP and MojoAuth.
Which verification methods can I compare?
You can review support for passkeys, push verification, TOTP, SMS OTP and email OTP.
Can I find open-source MFA code here?
Yes. Certain listed items make their code open source, including LinOTP.
Which platforms do these tools run on?
The entries list web, API, Android, iOS, self-hosted and Linux deployments.
Do listed services have free trials?
Several entries include trials, with examples lasting 14, 30 or 60 days depending on the service.
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