zitadel/zitadel

Health v2 · maintenance only

Adoption not part of the score

14864 stars · 1250 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

ZITADEL is an open-source identity and access management (IAM) platform providing authentication and authorization out of the box, including SSO, MFA, passkeys, OIDC, OAuth2, SAML, and SCIM. It is API-first with gRPC and REST APIs, SDKs, and a built-in multi-tenancy model, deployable self-hosted or via ZITADEL Cloud.

Use cases

• add login and sso to my web app
• self-host an identity provider with oidc and saml
• implement multi-tenant b2b authentication
• add mfa and passkeys to my application
• manage users and organizations with scim provisioning
• build a custom login ui with an auth api
• replace auth0 or keycloak with an open-source iam

When to choose

• you need a full-featured, self-hostable IAM with OIDC, SAML, MFA, and passkeys out of the box
• your product is multi-tenant or B2B and needs per-organization branding and policies
• you want an API-first identity platform with gRPC/REST APIs and SDKs
• you need an auditable, extensible auth system with custom flows (Actions)

When to avoid

• you only need simple session auth for a single small app without federation
• you require a permissive license for managed offerings (AGPL-3.0 applies)
• you cannot operate a Go service with a PostgreSQL dependency
• you need a lightweight embedded auth library rather than a standalone platform

Facets

service · maturity active

auth authorization api-framework middleware self-hosted security security apis web-development self-hosted backend go self-hosted cloud identity-and-access-management sso oidc oauth2 saml mfa passkeys multitenancy scim iam b2b login docker kubernetes linux macos web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="zitadel/zitadel")