authentik

Open-source, self-hosted identity provider (OAuth 2.0/OIDC, SAML, LDAP, SCIM, RADIUS, proxy auth) for single sign-on across your apps.

Visit goauthentik.io ↗Pricing & calculator Alternatives

Works with AI agents:llms.txt

Ask your AI about this, with this page as the source:ChatGPT ↗Claude ↗Perplexity ↗

Where it fits

Authentication · Open-source serviceA self-hosted identity provider that adds single sign-on in front of many apps, via OIDC, SAML, LDAP or a proxy.Trade-off: Self-hosted only, with no hosted plan; built more for SSO across apps than for sign-up flows inside a customer-facing product.

How authentik itself is built

3 tools, from its own code, website and Product Hunt page.

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Netlify

Who uses it

No maker's live product on record yet.

We haven't found a product that uses authentik yet.

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Reliability and open issues

Most wanted on GitHub

Allow Identification via QR Code👍 31 · opened May 2024 · active Sep 2026
Kerberos provider👍 21 · opened Jun 2023 · active Oct 2025
TACACS+ Provider👍 19 · opened Jul 2024 · active Sep 2026
Would you please add CAS protocal support👍 18 · opened Apr 2023 · active Sep 2026
Custom translation for user-defined prompts👍 15 · opened Sep 2021 · active Aug 2026

Open on 2026-10-04 in goauthentik/authentik, with activity in the last year — issues and feature requests by 👍.

Alternatives to authentik

All alternatives by situation →

ClerkDropping prebuilt sign-in, profile and organization UI into a React or Next.js app.Free tier307 makers · authentication

SupabaseApps already on Supabase — auth is part of the same project as the database.Open sourceFree tier13 makers · authentication

FirebaseMobile and client-heavy apps already using Firebase.Free tier4 makers · authentication

Better AuthTypeScript apps that want users and sessions in their own database, at no cost.Open sourceFree tier6 makers · authentication

WorkOSB2B SaaS that will need enterprise SSO and directory sync.Free tier19 makers · authentication

Auth0Complex identity needs and enterprise compliance.Free tier21 makers · authentication

KeycloakA self-hosted identity server with SSO, OpenID Connect, SAML and user federation for several apps at once.Open sourceFree tier3 makers · authentication

Hexclave (Stack Auth)A Clerk-style developer experience you can also self-host.Open sourceFree tier2 makers · authentication

LogtoOpen-source OIDC auth with hosted sign-in pages, organizations and roles, on a cloud with 50,000 free monthly active users or on your own servers.Open sourceFree tier2 makers · authentication

Questions makers ask about authentik

Is authentik free?

Yes — there is a free tier a small product can run on; paid use starts at $5 per internal user/mo, $0.02 per external user/mo (Enterprise, billed annually). source ↗

Is authentik open source or self-hostable?

Open source, and you can self-host it. source ↗

Can AI coding agents work with authentik?

It serves an llms.txt docs index.

Who uses authentik?

No tracked product yet. source ↗