ZITADEL – identity and access management platform

ZITADEL is an identity and access management platform for securing web applications, SaaS products and business-to-business services.

It provides authentication, authorization, user management and identity federation through a central, API-first service.

The platform supports both self-hosted deployments and ZITADEL’s hosted cloud service. Its hierarchical multi-tenancy model separates instances, organizations and projects, allowing administrators to apply identities, roles, policies and branding at different levels.

This is free and open source software.

Key Features

• Provides single sign-on using OpenID Connect and SAML 2.0.
• Supports passwords, passkeys, WebAuthn, one-time passwords and hardware security keys.
• Offers native multi-tenancy with isolated organizations, projects, policies and roles.
• Integrates external enterprise, social and LDAP identity providers.
• Includes role-based access control, delegated administration and machine-to-machine authentication.
• Provides SCIM 2.0 provisioning, identity brokering and domain discovery.
• Exposes resources and operations through REST, connectRPC and gRPC APIs.
• Maintains an immutable event stream that provides a comprehensive audit trail.
• Supports webhooks, custom actions and token enrichment.
• Includes self-registration, account recovery, verification and other self-service workflows.
• Offers an administration console and organization-specific branding.
• Supports Docker Compose and Kubernetes deployments backed by PostgreSQL.
• Provides horizontal scaling and zero-downtime updates.

Website: github.com/zitadel/zitadel
Support:
Developer: ZITADEL
License: GNU Affero General Public License v3.0

ZITADEL is written in Go. Learn Go with our recommended free books and free tutorials.

Related Software

Read our verdict in the software roundup.

Explore our carefully curated directory of recommended free and open source software, covering every major software category. The directory forms part of our extensive collection of articles for Linux enthusiasts. It includes hundreds of detailed reviews, together with free and open source alternatives to proprietary software from companies such as Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk. LinuxLinks also covers interesting projects worth exploring, Linux-compatible hardware, free programming books and tutorials, and much more. Know a useful free and open source Linux application that we haven’t covered? Tell us about it using our submission form.