Softwr

Cybersecurity · head to head

Authelia vs Pants Build

Authelia logo

Authelia

Cybersecurity

Open-source authentication and two-factor portal for reverse proxies

From
Free
Rated
-
Full reviewWebsite
Pants Build logo

Pants Build

Developer Tools

Fast, scalable build system with intelligent defaults for Python and more

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Authelia depends on a reverse proxy: it is not a standalone identity provider; Pants Build smaller community compared to Bazel with fewer third-party tool integrations
  • They diverge on capability: Authelia covers Reverse proxy integration, Pants Build covers Intelligent defaults.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Authelia and Pants Build actually diverge.

Attributes where Authelia and Pants Build differ
AttributeAutheliaPants Build
Pricing modelOpen source, no licence feeopen-source
PlatformsDocker, Kubernetes, Linux, Self-hostedLinux, macOS, Windows
CategoryCybersecurityDeveloper Tools

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 Authelia

  • Reverse proxy integration
  • Two-factor authentication
  • Access control rules
  • Lightweight backends

Only in Pants Build

  • Intelligent defaults
  • Python-first design
  • Multiple dependency resolves
  • File-level operations
  • Git integration
  • Tool integrations
  • Python 3 plugin API

What people use each for

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

Authelia

  • Putting a login and 2FA in front of self-hosted services that have nonenot Pants Build
  • Adding SSO across a small set of internal tools without a full identity platformnot Pants Build
  • Home and small-team infrastructure behind a single reverse proxynot Pants Build

Pants Build

  • Python-heavy monorepos with complex interdependenciesnot Authelia
  • Multi-language projects mixing Python, Go, and JVM languagesnot Authelia
  • Teams seeking minimal build configuration overheadnot Authelia
  • Organizations implementing Git-aware test selectionnot Authelia

Where each one falls short

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

Authelia

  • Depends on a reverse proxy: it is not a standalone identity provider
  • Configuration is YAML-first with no administrative interface, so changes mean editing files
  • Not a full IAM: user management, provisioning and federation are limited compared with Keycloak
  • Scales poorly as an organisation-wide identity solution, which is not its target

Pants Build

  • Smaller community compared to Bazel with fewer third-party tool integrations
  • Python plugin API steeper learning curve for custom build rules
  • Less mature ecosystem for non-Python languages
  • Fewer integration examples for enterprise CI/CD platforms

Pricing, plan by plan

Authelia

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

Pants Build

Free

No published plan breakdown. See the Pants Build review.

Which should you pick?

Choose Authelia if

  • You need reverse proxy integration.
  • You want to start without paying.
  • You work on Docker, Kubernetes, Linux, Self-hosted.
  • You also want two-factor authentication.
Authelia review

Choose Pants Build if

  • You need intelligent defaults.
  • You want to start without paying.
  • You work on Linux, macOS, Windows.
  • You also want python-first design.
Pants Build review

Questions people ask

Is Authelia or Pants Build better?
Neither clearly leads. Authelia starts at Free and Pants Build at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Authelia or Pants Build?
Authelia starts at Free and Pants Build at Free.
Does Authelia or Pants Build run on more platforms?
Authelia runs on Docker, Kubernetes, Linux, Self-hosted. Pants Build runs on Linux, macOS, Windows.
Can I use Authelia for free?
Both have a free tier, so you can try either at no cost before committing.
What is Authelia best used for?
Authelia is most often used for putting a login and 2fa in front of self-hosted services that have none, adding sso across a small set of internal tools without a full identity platform, home and small-team infrastructure behind a single reverse proxy. Of those, putting a login and 2fa in front of self-hosted services that have none and adding sso across a small set of internal tools without a full identity platform are not what Pants Build is typically brought in for.
What can Authelia do that Pants Build cannot?
Authelia covers Reverse proxy integration, Two-factor authentication, Access control rules, Lightweight backends. Pants Build covers Intelligent defaults, Python-first design, Multiple dependency resolves, File-level operations.

Answered from the vendors’ own pages

Authelia: Is Authelia free?

Yes, open source with no licence fee.

Pants Build: What languages does Pants support?

Pants supports Python as a first-class citizen, with production-ready support for Go, Java, Scala, Kotlin, Shell scripts, and Docker.

Source
Authelia: Does Authelia need a reverse proxy?

Yes. It integrates through forward authentication with Nginx, Traefik, Caddy or HAProxy rather than sitting in front of traffic itself.

Pants Build: Do I need to write BUILD files with Pants?

Pants uses static analysis to infer dependencies and project structure, minimizing required BUILD file configuration compared to other build systems.

Source
Authelia: Authelia or Keycloak?

Authelia is far lighter and aimed at protecting self-hosted services behind a proxy. Keycloak is a full identity and access management platform, and much more to run.

Pants Build: How does Pants handle complex dependency scenarios?

Pants provides file-level dependency tracking, multiple dependency resolves with lockfiles, and sophisticated dependency analysis that works correctly even with circular or complex dependency graphs.

Source
Share

Related pages

More on Authelia

More on Pants Build

Keep looking

Other head to heads