ZITADEL
Identity infrastructure, simplified for you
About ZITADEL
ZITADEL is an open-source identity and access management platform that provides SSO, MFA, passkeys, OIDC, SAML, and SCIM out of the box. Built with an API-first, event-driven architecture, it supports complex multi-tenancy scenarios for B2B and B2C applications, and can be deployed as a managed cloud service or self-hosted on your own infrastructure.
Pros & Cons
Pros
- Open-source with full code transparency and no vendor lock-in
- Powerful built-in multi-tenancy supporting millions of organizations out of the box
- Developer-friendly API-first design with SDKs for multiple programming languages
- Generous free tier with 100 daily active users and transparent pay-as-you-go pricing
- Complete audit trail via event-sourced architecture with immutable event logs
- Flexible deployment options including managed cloud and self-hosted
Cons
- Smaller community and ecosystem compared to established IAM platforms like Auth0 or Okta
- Limited advanced governance and compliance features for complex enterprise requirements
- Infrastructure-as-code support is still maturing, with some configuration only available through UI
- Steeper learning curve for teams unfamiliar with event-driven identity architectures
Key Features
Single Sign-On (SSO)
Centralized authentication across all your applications using OIDC and SAML protocols for a seamless user experience.
Multi-Factor Authentication
Enforce MFA with TOTP, passkeys, biometrics, and security keys to enhance account security for high-value actions.
Multi-Tenancy
Built-in support for millions of tenants with per-organization branding, identity providers, and access policies for B2B SaaS products.
Identity Brokering
Let users authenticate via their preferred identity provider including Google, Microsoft, GitHub, and custom OIDC/SAML providers.
Passwordless Authentication
Support for passkeys and FIDO2 security keys, enabling users to log in without traditional passwords.
Event-Driven Architecture
Every mutation is stored as an immutable event, providing complete audit trails and the ability to stream events to external systems via webhooks.
Customizable Login UI
Fully brandable hosted login pages with configurable colors, logos, icons, and typography to match your application design.
SCIM Provisioning
Automated user provisioning and deprovisioning via SCIM protocol for seamless directory synchronization.
Actions & Workflows
Execute custom workflows triggered by predefined events like user registration or login, without deploying additional code.
Role-Based Access Control
Define roles at the project level and delegate role assignment to tenant organizations, enabling fine-grained authorization management.
Pricing
- 100 daily active users
- 1 instance
- SSO, MFA, Passkeys
- OIDC & SAML support
- Community support
- Hosted login page
- 25,000 daily active users
- 3 identity providers
- Custom domain
- 99.5% uptime SLA
- Extended support
- Pay-as-you-go billing
- Cloud or self-hosted deployment
- Custom support SLA
- Tailored volume pricing
- Technical Account Manager
- Custom threat analysis
- Custom metrics & monitoring
Best For
B2B SaaS Multi-Tenancy
Manage authentication and authorization for multi-tenant SaaS products, letting each customer organization self-manage users, roles, and identity providers.
B2C Consumer Applications
Provide frictionless signup and login with social logins, passwordless authentication, and enforced MFA for high-value actions like payments.
API & Microservices Security
Secure API access across distributed microservices architectures using OIDC tokens, machine-to-machine authentication, and fine-grained role-based access control.
Enterprise Workforce Identity
Centralize employee authentication with SSO across internal tools, enforce MFA policies, and automate user provisioning via SCIM directory sync.
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