Best Clerk Alternatives (2026)

12 Authentication & Authorization APIs you can use instead of Clerk. Compared by auth type, HTTPS support, and CORS compatibility.

Looking for alternatives to

Clerk

Drop-in React components for authentication and authorization

apiKeyHTTPSCORS

Best Authentication & Authorization APIs Compare all Authentication & Authorization APIs

All Alternatives to Clerk

12 APIs

Auth0

Easy to implement, adaptable authentication and authorization platform

apiKeyHTTPSCORS

Authorized Partner API Specification

To access files in user’s DigiLocker account from your application, you must first obtain user’s authorization.

apiKeyHTTPS

Corbado

Passkey-first authentication

apiKeyHTTPSCORS

Ex Libris APIs

For more information on how to use these APIs, including how to create an API key required for authentication, see [Alma REST APIs](https://developers.exlibrisgroup.com/alma/apis).

apiKeyHTTPS

GetOTP

Implement OTP flow quickly

apiKeyHTTPS

Kinde

Authentication for modern applications. Integrates in minutes and free up to 7,500 MAU

OAuthHTTPS

Labs64 NetLicensing RESTful API Test Center

The Labs64 <a href='https://netlicensing.io/wiki/restful-api' target='_blank'>NetLicensing RESTful API</a> gives you access to NetLicensing’s core features.<br/><br/><strong>Authentication</strong>...

apiKeyHTTPS