How do I set up authentik with OAuth2 for my web app?

Authentik provides OAuth2/OIDC support; you need to deploy it via Docker or Kubernetes, then configure an application in the admin UI to generate client credentials. Refer to the documentation for detailed steps on integrating providers and scopes.

authentik vs Keycloak: which is better for self-hosted SSO?

Authentik offers a more modern UI and streamlined deployment options like DigitalOcean Marketplace, while Keycloak has a larger ecosystem and longer track record. Choose authentik for cloud-native setups or if you prefer its interface, but Keycloak might suit those needing extensive community plugins.

Can authentik integrate with Active Directory?

Yes, authentik supports LDAP integration, allowing it to sync with Active Directory for user authentication and management. You'll need to configure LDAP providers in the admin UI and map attributes accordingly.

What are the hardware requirements for running authentik?

Requirements vary by deployment scale; for small setups, a server with 2GB RAM and a dual-core CPU suffices, but production clusters may need more resources. Check the documentation for specific recommendations based on your user load.

Does authentik support multi-tenancy?

Authentik supports multi-tenancy through applications and policies, allowing you to manage separate tenants or organizations within a single instance. However, it's not as granular as some enterprise solutions, so review the docs for setup details.

Is there a way to migrate from Auth0 to authentik?

Migration involves exporting user data from Auth0 and importing it into authentik using its APIs or custom scripts, then reconfiguring applications. The process can be complex and may require testing in a staging environment first.

Authentik — Open Source Identity Provider

What is Authentik?

authentik is an open-source Identity Provider (IdP) that provides modern single sign-on (SSO) capabilities. It supports a wide range of authentication protocols including SAML, OAuth2/OIDC, LDAP, and RADIUS, designed to be self-hosted from small labs to large production environments. It solves the problem of centralized, secure identity management without relying on proprietary cloud services.

Target Audience

System administrators, DevOps engineers, and organizations needing a self-hosted identity solution for internal or customer-facing applications.

Value Proposition

Developers choose authentik for its comprehensive protocol support, scalability, and the ability to fully control their identity infrastructure. Its open-source nature and self-hosting capabilities provide a cost-effective and flexible alternative to commercial identity providers.

Overview

The authentication glue you need.

Use Cases

Best For

Replacing commercial identity providers like Okta or Auth0 with a self-hosted solution
Implementing SSO for internal enterprise applications
Managing authentication for Kubernetes clusters or containerized environments
Integrating legacy systems using LDAP or RADIUS with modern web apps
Building a centralized identity platform for development labs or testing environments
Deploying identity management on cloud platforms like AWS or DigitalOcean

Not Ideal For

Teams needing a fully managed, cloud-hosted identity service with zero infrastructure maintenance
Quick prototypes or MVPs where immediate, minimal-configuration authentication is prioritized
Organizations requiring vendor-provided SLAs and dedicated support for strict compliance

Pros & Cons

Pros

Broad Protocol Support

Supports SAML, OAuth2/OIDC, LDAP, and RADIUS, enabling integration with diverse legacy and modern systems as highlighted in the README.

Flexible Deployment Options

Offers deployment via Docker Compose, Kubernetes, AWS CloudFormation, and DigitalOcean Marketplace, catering to various infrastructure setups per the installation documentation.

Scalable Architecture

Designed to handle identity management from small labs to large production clusters, ensuring it grows with organizational needs as stated in the README.

Modern User Interface

Provides light and dark mode interfaces for application and admin management, improving usability across different preferences.

Cons

Self-Hosting Complexity

Requires setup and ongoing maintenance of Docker or Kubernetes infrastructure, which can be resource-intensive for teams without DevOps expertise.

Limited Commercial Support

The open-source version relies on community and documentation, lacking formal support channels compared to the enterprise offering mentioned in the README.

Feature Gaps vs. Proprietary Solutions

May lack advanced integrations or features found in commercial IdPs like Okta or Auth0, as the README positions the enterprise version for robust, large-scale use.

Open Source Alternative To

Authentik is an open-source alternative to the following products:

Auth0

Auth0 is a cloud-based identity and access management platform that provides authentication and authorization services for applications. It supports single sign-on, multi-factor authentication, and social login integrations.