Authentication
User authentication, authorization, and identity management solutions
Wichtige Überlegungen
- ✓ Security and compliance features
- ✓ Supported authentication methods
- ✓ Pricing per active user
- ✓ Customization options
- ✓ Developer experience
Auth.js
Open-source authentication library for Next.js, SvelteKit, and other frameworks. Formerly NextAuth.js. Self-hostable with full control over your auth flow.
Auth0
Identity platform for applications to authenticate and authorize users. Part of Okta, offering B2C and B2B authentication solutions.
AWS Cognito
Amazon's managed user identity service. Three pricing tiers (Lite, Essentials, Plus) with different feature sets.
Clerk
Complete authentication and user management platform with pre-built UI components. Offers generous 10,000 MAU free tier.
Descope
Descope is a drag-and-drop authentication platform that lets you build auth flows visually without code. It offers passwordless authentication, MFA, and user management with a no-code flow builder for complex auth journeys.
Duende IdentityServer
Highly extensible, OpenID Foundation-certified framework for implementing OpenID Connect and OAuth 2.x protocols in ASP.NET Core. Commercial successor to IdentityServer4, offering full control over authentication UI, business logic, and data with self-hosted deployment.
Firebase Authentication
Google's authentication service with 50,000 MAU free tier. Part of the Firebase ecosystem with excellent mobile SDKs.
FusionAuth
FusionAuth is a complete identity and access management solution that can be self-hosted or used as a cloud service. It offers unlimited users on self-hosted, making it a cost-effective Auth0 alternative for high-volume applications.
Hanko
Hanko is a passkey-first authentication solution that makes passwordless login simple. Open-source and self-hostable, it provides WebAuthn/passkey authentication with pre-built UI components. Ideal for teams wanting modern, phishing-resistant auth.
Keycloak
Open source identity and access management solution. CNCF incubating project (donated April 2023). Zero licensing cost.
Kinde
Kinde is a modern authentication and user management platform built for developers. It offers a generous free tier of 10,500 MAU, pre-built UI components, and excellent framework support. A strong Clerk alternative with competitive pricing.
Microsoft Entra ID
Microsoft identity platform (formerly Azure AD). Free tier included. Premium P1 $6/user/mo, P2 $9/user/mo.
Okta
Enterprise identity and access management platform. Workforce Identity suites for SSO, MFA, and lifecycle management.
Ory
Cloud-native identity platform. Open source free. Ory Network: $70/mo production plan, $30/1K DAU after.
Stytch
Passwordless-first authentication platform from ex-Plaid engineers. $1B valuation, $146M funding. Includes all auth methods, biometric MFA, and OAuth in free tier.
Supabase Auth
Open source Firebase alternative with built-in authentication. 50,000 MAU free, 100,000 MAU on Pro plan with spend caps.
SuperTokens
Open-source Auth0 alternative. Self-hosted free forever. Cloud: 5K MAU free, then $0.02/MAU.
WorkOS
Enterprise-ready authentication with SSO, SCIM, and directory sync. First 1 million MAUs free. Built for B2B SaaS apps selling to enterprises.