Amazon Cognito
Managed authentication and user management service in AWS
Pricing: Pay-as-you-go
Best for: AWS-native apps, user pools, federated identity
Auth Alternatives
Auth0 Alternatives in 2026
Enterprise identity platform with universal login and extensive integrations
8 alternatives to Auth0
Auth.js
Authentication library for JS frameworks (formerly NextAuth.js) — now part of the Better Auth project
Pricing: Free / Open Source
Best for: Next.js, SvelteKit, Express, and other JS frameworks needing self-hosted auth
Better Auth
TypeScript-first open-source authentication library with 40+ social providers, SSO/SAML, multi-tenancy, and 50+ plugins. All user data stays in your own database.
Pricing: Free / Open Source
Best for: TypeScript projects wanting full auth ownership with enterprise features, Drizzle or Prisma
Clerk
Drop-in authentication with pre-built UI components and user management
Pricing: Freemium — 10k MAU free, from $25/mo
Best for: SaaS apps, fast auth setup, user management UI
Firebase Auth
Google's auth service with social login, phone auth, and anonymous auth
Pricing: Free (included with Firebase)
Best for: Mobile apps, Google ecosystem, quick setup
Keycloak
Open-source identity and access management with SSO, OAuth2, OIDC, and SAML support
Pricing: Free / Open Source (managed via Red Hat SSO)
Best for: Self-hosted enterprise auth, multi-tenant SSO, organizations needing full data ownership
Supabase Auth
Authentication service by Supabase with email, OAuth, magic links, and row-level security integration
Pricing: Included with Supabase plans
Best for: Postgres-backed apps, SaaS auth, rapid full-stack development
WorkOS
Developer platform for enterprise auth features including SSO, SCIM directory sync, and audit logs
Pricing: Freemium — free up to 1M MAU; enterprise features paid
Best for: B2B SaaS products that need enterprise SSO, SAML, SCIM, and compliance-grade audit logs
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