Autheliavs
Keycloak


Keycloak: A full IAM platform when proxy-level protection is not enough

Open-source authentication and two-factor portal for reverse proxies
Overview
Authelia is an open-source authentication and authorisation server providing single sign-on and two-factor authentication through a login portal. It is designed to work with a reverse proxy — Nginx, Traefik, Caddy or HAProxy — which forwards authentication decisions to it. That model is its distinguishing feature and its constraint. It protects applications that have no authentication of their own, which is exactly the situation in self-hosted stacks full of admin panels and dashboards. It is deliberately lightweight, with file or LDAP-backed users rather than a full identity platform.
The honest half
Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about Authelia.
Cross-shopped
Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.


Keycloak: A full IAM platform when proxy-level protection is not enough


authentik: A middle ground: a real identity provider that is still self-hosted and approachable
Pricing
Taken from the vendor's own pricing page. Prices move, so check before you buy.
Authelia
Free
Capabilities
Reverse proxy integration
Works with Nginx, Traefik, Caddy and HAProxy through forward auth
Two-factor authentication
TOTP, WebAuthn and push notification options
Access control rules
Per-domain and per-path policies in configuration
Lightweight backends
File-based or LDAP users, with no heavy dependencies
Answered, with sources
Each answer names the page it came from, so you can check it rather than take our word for it.
Yes, open source with no licence fee.
Yes. It integrates through forward authentication with Nginx, Traefik, Caddy or HAProxy rather than sitting in front of traffic itself.
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.
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Softwr does not host reviews and shows no star rating for Authelia, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.
What people switch to, and what they give up
Every tier, and where the cost actually lands
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