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Last checked October 15, 2026

Best Free Alternatives to Auth0 (2026)

Auth0 is a user directory and a login box. The migration is users and the application settings, not the rules you wrote in their dashboard.

DevelopersStartupsPrice unverified

What Auth0 costs

Paid plans exist. A current dollar figure is not copied into this listing.

Auth0 website·Pricing source

Ranked by Drop-in score

How we rank

#1 is the highest-scoring alternative that is not sponsored. A featured listing, when one is sold, is labeled and sits after #1.

  1. 100
    #1Open sourceReview notes

    Keycloak

    Hosted login, OIDC, SAML, and a user directory.

    Last checked October 15, 2026 · Apache-2.0

    WebSelf-host
    Cost and detailsMigration guideWebsite
  2. 93
    #2Open sourceReview notes

    Authentik

    An identity provider with an MIT core.

    Last checked October 15, 2026 · MIT (core)

    WebSelf-host
    Cost and detailsWebsite
  3. 90
    #3Open sourceReview notes

    Zitadel

    An identity server written in Go.

    Last checked October 15, 2026 · AGPL-3.0

    WebSelf-host
    Cost and detailsWebsite
  4. 88
    #4Open sourceReview notes

    SuperTokens

    Login recipes with an Apache core.

    Last checked October 15, 2026 · Apache-2.0 (core)

    WebSelf-host
    Cost and detailsWebsite
  5. 71
    #5Open sourceReview notes

    Authelia

    Two-factor login in front of your apps.

    Last checked October 15, 2026 · Apache-2.0

    WebSelf-host
    Cost and detailsWebsite

Feature by feature

Full is the whole job. Partial is a real version with a gap. Missing means it does not do this. Not checked counts as zero in the score.

FeatureKeycloak#1 · 100Authentik#2 · 93Zitadel#3 · 90SuperTokens#4 · 88Authelia#5 · 71
A hosted login pageWeight 10FullFullFullFullPartial
OIDC or SAMLWeight 10FullFullFullPartialFull
Social loginWeight 6FullPartialFullFullPartial
A second factorWeight 8FullFullPartialFullFull
A user directoryWeight 8FullFullFullFullPartial

Real cost

Keycloak

Free tier
The community edition can be self-hosted without a per-user fee. Hosted prices are not copied here. Unverified.
Hosted plan
No hosted price recorded.
Self-hosting
Hard. Java. Plan for upgrades and a database.

Authentik

Free tier
The community edition can be self-hosted without a per-user fee. Hosted prices are not copied here. Unverified.
Hosted plan
No hosted price recorded.
Self-hosting
Moderate. Plan on Docker or a small VM. A hosted plan, when one exists, is separate from the free self-host.

Zitadel

Free tier
The community edition can be self-hosted without a per-user fee. Hosted prices are not copied here. Unverified.
Hosted plan
No hosted price recorded.
Self-hosting
Moderate. Plan on Docker or a small VM. A hosted plan, when one exists, is separate from the free self-host.

SuperTokens

Free tier
The community edition can be self-hosted without a per-user fee. Hosted prices are not copied here. Unverified.
Hosted plan
No hosted price recorded.
Self-hosting
Moderate. Plan on Docker or a small VM. A hosted plan, when one exists, is separate from the free self-host.

Authelia

Free tier
The community edition can be self-hosted without a per-user fee. Hosted prices are not copied here. Unverified.
Hosted plan
No hosted price recorded.
Self-hosting
Moderate. Plan on Docker or a small VM. A hosted plan, when one exists, is separate from the free self-host.

Top pair

Migrate from Auth0 to Keycloak

Export users if the tenant allows a hash your new directory can read.

Read the migration guide

Questions