Keycloak
96 · HealthyIdentity and access management server with SSO, OIDC, SAML and user federation (CNCF).
Identity and access management server with SSO, OIDC, SAML and user federation (CNCF).
Identity provider with flows, SSO across OIDC, SAML, LDAP and a proxy outpost.
Auth and identity service for SaaS and AI apps, built on OIDC with organizations and RBAC.
Multi-tenant identity platform with event-sourced audit trail and B2B organizations.
Authentication server with passkeys, passwords, social login and drop-in web components.
TypeScript authentication framework with email and social login, passkeys, two-factor, organizations and SSO plugins.
Headless identity and user-management server with an API-first design.
Lightweight OpenID Connect provider that signs users in to your apps with passkeys only.
Authentication backend with prebuilt UI, sessions and multi-tenancy.
Single sign-on and two-factor portal that sits in front of web apps via a reverse proxy.
Single sign-on and two-factor portal that sits in front of web apps via a reverse proxy.
Alternative to
Will it still be around?
Stable
Score 71/100
Can a business use it freely?
Free to use
Apache-2.0 · open source (permissive)




A 25-user team on Okta Starter Suite pays about $150 a month. Authelia on OpenTools costs $15 a month, setup included, so you save $135 a month, about $4,860 over three years.
Monthly cost
You save each month
$135/mo
90% less than today
Saving from month one
You save
List price checked 7 Oct 2026 · Source · Disclaimer
Stable · activity, bus factor and issue responsiveness, from GitHub
Score v2 · How it works
100/100
8/100
94/100
Free to use
Apache-2.0 · Open source (permissive)
What you need to do
Use, change, host and sell it for any purpose, commercial included, with no license to buy. Keep the copyright notice.
Apache License 2.0 · Open source (permissive). OSI-approved license with few conditions beyond keeping the copyright notice.
Detected by GitHub as Apache-2.0.
Snapshot from 2026-10-08 · Funding: open collective
Points for pull requests merged into Authelia and reviews of them since 10 October 2025. Building something another user asked for earns more. 69 people have points on Authelia in all.