authentik
Authentik Security Inc. · Identity & access
Self-hosted identity provider with OIDC, SAML, LDAP, RADIUS and SCIM support and a built-in application proxy, with an MIT core and an enterprise edition
MITOpen sourceFreeSelf-hostedNov 2, 2026
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Keycloak
Keycloak project (CNCF incubating, originated at Red Hat) · Identity & access
Open-source identity and access management server providing single sign-on with OpenID Connect, OAuth 2.0 and SAML, user federation and fine-grained authorization
Apache-2.0Open sourceFreeSelf-hostedNov 2, 2026
Tailscale
Tailscale Inc. · Tunneling & remote access
WireGuard-based mesh overlay network with a hosted coordination service, identity-provider login, access policies, MagicDNS and features such as Tailscale SSH, Serve and Funnel
BSD-3-ClauseFreemiumPaidLocalNov 2, 2026
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