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Authentik vs Auth0

Self-host swap-in for Auth0. · Self-host Auth0 · Authentik on os-alt

Authentik is one of the open-source self-host replacements for Auth0 — license MIT, 15min docker-compose to stand up, and $10 vps — python + postgres + redis stack. Compare against Auth0's $240/mo at 1k MAU on B2C Essentials; jumps fast at scale below.

Authentikopen-sourceAuth0paid SaaS
CategoryIdentity / SSO / authentication-as-a-serviceIdentity / SSO / authentication-as-a-service
License / pricingMIT$240/mo at 1k MAU on B2C Essentials; jumps fast at scale
Starting price$0 self-host$25/user/mo
GitHubgoauthentik/authentik ★ 21.5k · last commit todayaliveclosed source
Setup time15min docker-composeSaaS — sign up + bill
Monthly cost$10 VPS — Python + Postgres + Redis stack.from $25/user/mo ($240/mo at 1k MAU on B2C Essentials; jumps fast at scale)

Switching from Auth0 to Authentik

Auth0 export gives you user JSON + bcrypt hashes. Authentik's `ak users_import` (admin CLI) accepts a JSON manifest; bcrypt hashes are accepted directly. Application config (clients, audiences) is reauthored in the Authentik admin UI as Providers + Applications.

Good fit for
Modern apps that want OIDC + SAML with a clean web UI and a less heavyweight runtime than Keycloak.
Weak at
Smaller community than Keycloak; fewer pre-built SAML integrations to enterprise IDPs.

Other open-source self-host alternatives to Auth0

  • Keycloak
    Apache-2.020-30min docker-compose (Keycloak + Postgres)$10 VPS for a small team; $20+ for production with HA Postgres.
  • Zitadel
    Apache-2.020min docker-compose$10-15 VPS — Go binary + CockroachDB or Postgres.

In a terminal? npx os-alt auth0 prints Auth0's self-host options — how the CLI works →

FAQ

Is Authentik a free alternative to Auth0?

Yes — Authentik is open source under MIT. Self-host cost: $10 VPS — Python + Postgres + Redis stack.. Auth0 starts at $25/user/mo ($240/mo at 1k MAU on B2C Essentials; jumps fast at scale).

How long does Authentik take to set up vs Auth0?

Self-hosting Authentik: 15min docker-compose. Auth0 is a hosted SaaS — sign up and you're in.

What is Authentik good at, and what is it weak at?

Good fit for: Modern apps that want OIDC + SAML with a clean web UI and a less heavyweight runtime than Keycloak.. Weak at: Smaller community than Keycloak; fewer pre-built SAML integrations to enterprise IDPs..