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Cybersecurity · head to head

authentik vs Buildah

authentik logo

authentik

Cybersecurity

Open-source identity provider with flexible authentication flows

From
Free
Rated
-
Full reviewWebsite
Buildah logo

Buildah

Cloud

Build OCI container images without a daemon or a Dockerfile

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: authentik smaller project than Keycloak, with a correspondingly smaller community and fewer integration guides; Buildah linux only, with no native macOS or Windows support
  • They diverge on capability: authentik covers Configurable flows, Buildah covers Daemonless builds.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which authentik and Buildah actually diverge.

Attributes where authentik and Buildah differ
AttributeauthentikBuildah
Pricing modelOpen-source core with a paid enterprise tierOpen source, no licence fee
PlatformsDocker, Kubernetes, Linux, Self-hostedLinux
CategoryCybersecurityCloud

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in authentik

  • Configurable flows
  • Protocol support
  • Application proxy
  • Modern admin interface

Only in Buildah

  • Daemonless builds
  • Rootless
  • Dockerfile compatible
  • Scriptable builds

What people use each for

The jobs each tool is most often brought in to do.

authentik

  • Self-hosted SSO across internal services without commercial identity pricingnot Buildah
  • Putting authentication in front of applications that have none, via the proxynot Buildah
  • Teams who tried Keycloak and wanted something less heavynot Buildah

Buildah

  • Building images in CI without a privileged Docker daemonnot authentik
  • Producing minimal images with tighter layer control than a Dockerfile givesnot authentik
  • Scripted image assembly where a Dockerfile is the wrong abstractionnot authentik

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

authentik

  • Smaller project than Keycloak, with a correspondingly smaller community and fewer integration guides
  • The flow model is flexible but conceptually unfamiliar, and simple setups can feel over-abstracted
  • Enterprise support and some governance features sit behind the paid tier
  • Self-hosted identity is still yours to secure, patch and keep available

Buildah

  • Linux only, with no native macOS or Windows support
  • Scriptable builds are powerful but less portable and less familiar than a Dockerfile
  • Narrow by design: it builds images and does not run them, so it needs Podman or another runtime alongside

Pricing, plan by plan

authentik

Free
  • Open sourceFree
    • Full identity provider
    • All protocols
    • Community support

Buildah

Free
  • BuildahFree
    • Full functionality
    • No usage limits
    • Community support

Which should you pick?

Choose authentik if

  • You need configurable flows.
  • You want to start without paying.
  • You work on Docker, Kubernetes, Linux, Self-hosted.
  • You also want protocol support.
authentik review

Choose Buildah if

  • You need daemonless builds.
  • You want to start without paying.
  • You work on Linux.
  • You also want rootless.
Buildah review

Questions people ask

Is authentik or Buildah better?
Neither clearly leads. authentik starts at Free and Buildah at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, authentik or Buildah?
authentik starts at Free and Buildah at Free.
Does authentik or Buildah run on more platforms?
authentik runs on Docker, Kubernetes, Linux, Self-hosted. Buildah runs on Linux.
Can I use authentik for free?
Both have a free tier, so you can try either at no cost before committing.
What is authentik best used for?
authentik is most often used for self-hosted sso across internal services without commercial identity pricing, putting authentication in front of applications that have none, via the proxy, teams who tried keycloak and wanted something less heavy. Of those, self-hosted sso across internal services without commercial identity pricing and putting authentication in front of applications that have none, via the proxy are not what Buildah is typically brought in for.
What can authentik do that Buildah cannot?
authentik covers Configurable flows, Protocol support, Application proxy, Modern admin interface. Buildah covers Daemonless builds, Rootless, Dockerfile compatible, Scriptable builds.

Answered from the vendors’ own pages

authentik: Is authentik free?

The open-source edition is free and complete for most use. An enterprise tier adds support and additional features.

Buildah: Is Buildah free?

Yes, open source with no licence fee.

authentik: authentik or Keycloak?

authentik is generally reported as easier to run and administer; Keycloak is more established with a larger community and Red Hat behind it.

Buildah: Do I still need a Dockerfile?

No. Buildah reads Dockerfiles if you have them, but images can be built entirely from shell commands instead.

authentik: Can authentik protect apps with no login of their own?

Yes. Its application proxy places authentication in front of services that have no built-in authentication.

Buildah: How is Buildah different from Podman?

Buildah builds images; Podman runs them. Podman actually embeds Buildah for its build command, and the two are designed to be used together.

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