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Best Self-Hosted SSO & Identity Tools

Self-hosted single sign-on and identity providers let you own your logins — one account across every app, with 2FA, OIDC, and SAML on your terms. The options below range from full identity platforms to lightweight forward-auth gateways; compare them on protocols, footprint, and how much of an identity provider you actually need.

SSO & Identity

Authelia

A lightweight, open-source authentication and authorization server providing 2FA and SSO via a forward-auth portal in front of your reverse proxy — a self-hosted gatekeeper for existing apps, not a full identity provider.
Go
moderateRead guide →
SSO & Identity

authentik

An open-source identity provider supporting SAML, OAuth2/OIDC, and LDAP — a flexible, self-hostable alternative to Auth0, Okta, and Azure AD with a visual flow-based login builder.
PythonGoTypeScript
moderateRead guide →
SSO & Identity

Keycloak

A mature, enterprise-grade open-source identity and access management server — SSO, SAML, and OpenID Connect with user federation, built on Quarkus and backed by Red Hat.
JavaQuarkus
hardRead guide →
SSO & Identity

Pocket ID

A simple, self-hostable OIDC provider that lets users sign in to your apps with passkeys only — no passwords, built for small self-hosted setups that just need lightweight SSO.
GoSvelteKit
easyRead guide →
SSO & Identity

Tinyauth

The tiniest self-hosted login screen for your apps — a single small Go container that adds authentication, OAuth login, and access controls in front of Traefik, Nginx, or Caddy, and since v5 doubles as an OpenID Certified OIDC provider.
Go
easyRead guide →
SSO & Identity

Zitadel

A cloud-native, open-source identity and access management platform — OIDC, SAML, and passwordless auth with multi-tenancy built in, a self-hostable alternative to Auth0 and Okta.
Go
hardRead guide →

Head-to-heads in this category

SSOAug 2026
Authelia
vs
authentik

A tiny forward-auth gate vs. a full identity provider.

Read the verdict →
SSOAug 2026
authentik
vs
Keycloak

Modern and self-hoster-friendly vs. the enterprise standard.

Read the verdict →
SSOAug 2026
authentik
vs
Pocket ID

A full identity platform vs. a passkey-only sign-in box.

Read the verdict →
SSOAug 2026
authentik
vs
Tinyauth

A full identity platform vs. the tiniest possible login gate.

Read the verdict →
SSOAug 2026
authentik
vs
Zitadel

Two modern IdPs, built for different jobs.

Read the verdict →
SSOAug 2026
Keycloak
vs
Zitadel

The JVM incumbent vs. a modern, lighter Go alternative.

Read the verdict →

Replace a paid tool

Self-hosted Auth0 alternatives →

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