Last Updated on February 26, 2026
authentik is an Identity Provider that emphasizes flexibility and versatility.
It can be seamlessly integrated into existing environments to support new protocols. authentik is also a solution for implementing sign-up, recovery, and other similar features in your application, saving you the hassle of dealing with them.
Using a self-hosted, open source identity provider means prioritizing security and taking control of your most sensitive data. With authentik, you no longer need to continually place your trust in a third-party service.
This is free and open source software.
Key Features
- Supports the major providers, such as OAuth2, SAML, LDAP, and SCIM, so you can pick the protocol that you need for each application.
- Simple user interface.
- Native installation methods for K8s,
- Support for applications which don’t support SSO through a modified version of oauth2_proxy, which is managed by authentik.
- Advanced policy engine.
- Perform custom logic in policies via Python,
- MFA Support for TOTP and WebAuthn,
Website: goauthentik.io
Support: GitHub Code Repository
Developer: Jens Langhammer
License: MIT Expat License

authentik is written in Python and TypeScript. Learn Python with our recommended free books and free tutorials. Learn TypeScript with our recommended free books and free tutorials.
Related Software
| Single Sign-on Software | |
|---|---|
| KeyCloak | Identity and access management solution for applications and services |
| CAS | Enterprise multilingual single sign-on solution |
| authentik | Identity provider that emphasizes flexibility and versatility |
| Authelia | Authentication and authorization server |
| Casdoor | UI-first Identity and Access Management / Single-Sign-On platform |
| Kanidm | Simple and secure identity management |
| WSO2 Identity Server | Identity and Access Management solution |
| Janssen | Digital identity platform |
| OpenAM | Access management solution that includes SSO |
Read our verdict in the software roundup.
Explore our comprehensive directory of recommended free and open source software. Our carefully curated collection spans every major software category.This directory is part of our ongoing series of informative articles for Linux enthusiasts. It features hundreds of detailed reviews, along with open source alternatives to proprietary solutions from major corporations such as Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk. You’ll also find interesting projects to try, hardware coverage, free programming books and tutorials, and much more. Discovered a useful open source Linux program that we haven’t covered yet? Let us know by completing this form. |

