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Auth0

Auth0 provides authentication and authorization as a service for web, mobile, and legacy applications. · Auth0 · Auth

Official pricing Docs Report outdated info

Overview

Auth0 offers a robust authentication platform with a free plan for up to 25,000 monthly active users, making it easy to add secure login and user management to your apps.

Good fit

Use Auth0 when you need to quickly add secure, standards-compliant authentication to your applications without building your own auth system.

  • secure login
  • MFA
  • social login
  • user management

Not a fit

Avoid Auth0 if you require full on-premises control, need advanced customization, or expect to exceed 25,000 monthly active users without budget.

  • self-hosted auth
  • custom protocols
  • strict data residency
Quickstart · 5 steps
  1. Sign up for a free Auth0 account.
  2. Create a new application in the Auth0 dashboard.
  3. Configure allowed callback URLs for your app.
  4. Install the Auth0 SDK for your platform.
  5. Integrate Auth0 authentication into your app using provided guides.

Other free auth options

Supabase Auth
Supabase · Auth
50,000 monthly active users · Unlimited total users · Social OAuth logins and OAuth 2.1 server included
Billing risk: None
No card
Okta
Okta · Auth
Up to 10 active users (non-production only) · 100 authentications/minute rate limit · Org auto-expires after 90 consecutive days of inactivity
Billing risk: None
No card
Clerk
Clerk · Auth
50,000 monthly retained users per app · Unlimited applications · Up to 3 dashboard seats
Billing risk: None
No card
Ory
Ory · Auth
2 development environments · 0 production and 0 staging environments (dev/test only) · 1 team member
Billing risk: None
No card