# ZITADEL

> ZITADEL is a free, open-source app you can self-host in the identity & SSO category. Identity infrastructure with SSO, passkeys, multi-tenancy and audit trails, built in Go. It has 15,213 GitHub stars, is released under the AGPL-3.0 license and ships a Docker image. It is a self-hosted alternative to Auth0 and Okta.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/zitadel/zitadel |
| Website | https://zitadel.com/ |
| GitHub stars | 15,213 |
| Forks | 1,349 |
| Open issues | 985 |
| License | AGPL-3.0 |
| License type | Open source |
| Language | Go |
| Docker image | Yes |
| Platforms | Docker |
| Categories | Identity & SSO |
| Commits, last 12 months | 656 |
| Last commit | Oct 5, 2026 |
| Latest release | v4.19.4 (Oct 1, 2026) |
| Created | Mar 16, 2020 |
| Maintenance | Actively maintained |
| Archived | No |

Topics: saml, authentication, authorization, login, oidc, sso, 2fa, fido2, mfa, oauth2

## Install

ZITADEL ships a Docker image; follow the README at https://github.com/zitadel/zitadel for the image name and environment variables.

Need it installed for you? [appsgit installation help](https://appsgit.com/services/install): a fixed quote by email, single app installs from $79.

## ZITADEL replaces

- [Auth0 alternatives](https://appsgit.com/alternatives/auth0): An identity platform offering login, single sign-on and user management as a service.
- [Okta alternatives](https://appsgit.com/alternatives/okta): An enterprise identity and single sign-on provider.

## Similar apps in Identity & SSO

- [Keycloak](https://appsgit.com/apps/keycloak): Open-source identity and access management with SSO, OIDC, SAML and user federation. (37,156 stars, Apache-2.0, Java, Docker)
- [Authelia](https://appsgit.com/apps/authelia): Single sign-on and two-factor authentication portal for protecting web apps behind a reverse proxy. (29,182 stars, Apache-2.0, Go, Docker)
- [authentik](https://appsgit.com/apps/authentik): Flexible identity provider and SSO platform with OAuth2, SAML, LDAP and proxy outposts. (25,859 stars, MIT, Python, Docker)
- [SuperTokens](https://appsgit.com/apps/supertokens): Open-source authentication with login, sessions and social sign-in for your own app. (15,335 stars, Apache-2.0, Java, Docker)
- [Logto](https://appsgit.com/apps/logto): Modern auth infrastructure with OIDC, SSO and multi-tenant support for SaaS and apps. (14,652 stars, MPL-2.0, TypeScript, Docker)
- [Casdoor](https://appsgit.com/apps/casdoor): UI-first identity and access management platform supporting OAuth, OIDC, SAML and LDAP. (14,515 stars, Apache-2.0, Go, Docker)
- [Ory Kratos](https://appsgit.com/apps/ory-kratos): Headless identity and user management API with login, registration and account recovery. (13,909 stars, Apache-2.0, Go, Docker)
- [Dex](https://appsgit.com/apps/dex): Federated OpenID Connect provider that connects to LDAP, SAML and OAuth upstream identities. (11,157 stars, Apache-2.0, Go, Docker)

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