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Authentik

Identity and Access Management (IAM)

Open Source
OpenFrame Selected
Free Tier
Paid Plans
E
Enterprise
Self-hosted
OpenMSP Score
92
97
Reddit Impact Score
Github Score
874M
20KStars
1KForks
21KCommits
OtherLicense
Mar 20, 2026Last commit

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Authentik is a comprehensive, modern, and highly flexible open-source identity provider (IdP) and single sign-on (SSO) solution designed to meet the evolving needs of contemporary IT infrastructure. Built with a focus on simplicity, security, and extensibility, Authentik serves as a centralized authentication and authorization platform that seamlessly integrates with existing systems while providing advanced identity management capabilities.
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Key Features

Open Source Flexibility

Complete open-source identity provider with full source code access, allowing unlimited customization, self-hosting, and integration without vendor lock-in or hidden costs.

Multi-Protocol Support

Comprehensive support for OAuth2, OpenID Connect, SAML2, LDAP, RADIUS, and SCIM protocols, enabling seamless integration with both modern and legacy applications.

Custom Authentication Flows

Flexible flow-based system allowing administrators to create custom authentication, registration, and authorization workflows tailored to specific organizational requirements.

Advanced MFA Support

Built-in multi-factor authentication with support for TOTP, WebAuthn/FIDO2, SMS, email, and push notifications, providing layered security for user access.

Container-Native Deployment

Designed for modern infrastructure with Docker, Kubernetes, and cloud-native deployment options, supporting automatic scaling and high availability configurations.

Pros and Cons

Pros

Complete Open Source

Fully open-source with no feature restrictions in the community version, providing complete transparency, customization capabilities, and freedom from vendor lock-in.

Extensive Protocol Support

Supports virtually all modern authentication protocols including OAuth2, SAML2, LDAP, and RADIUS, making it compatible with almost any application or service.

Modern Architecture

Built with modern technologies and designed for container deployment, offering excellent performance, scalability, and integration with cloud-native environments.

Cons

Self-Hosting Complexity

Requires technical expertise to deploy, maintain, and scale properly, including managing databases, security updates, and high availability configurations.

Resource Requirements

Requires minimum 2 CPU cores and 2GB RAM, making it more resource-intensive than some alternatives like Authelia for smaller deployments.

Limited Support Options

Community support only for free version, with commercial support available only through expensive enterprise plans, potentially limiting assistance for complex issues.

Feature Comparison

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