authentik
authentik is a freemium identity provider used to add SSO, MFA, and access policies in front of company applications for IT and security teams.
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- Category
- Identity & Access
- Pricing
- Freemium
- Platforms
- Linux
- License
- Open source
- Reviewed
- Last reviewed 25 October 2026
What it is
An open core identity provider that brokers login to apps with standard protocols. It covers SSO, MFA, and policy-based access, with a web admin UI and outposts that sit in front of apps.
What it helps with
- Adding SSO and MFA in front of internal apps
- Enforcing access policies per application
- Running outposts that protect apps without rewriting them
- Choosing self-hosted core or Enterprise features
Who it's for
IT administrators and security teams who run identity for company applications.
Worth knowing
Core code is MIT. The authentik/enterprise/ tree is proprietary and needs a subscription for production use. Docker Compose and Kubernetes are the supported deploy paths.
Is authentik fully open source?
The core is MIT; Enterprise features are proprietary, so this listing is freemium.
How does it compare with Keycloak or Zitadel?
In our view Keycloak is the long-standing open source IdP, Zitadel is another modern alternative, and authentik focuses on flexible app access glue.
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