Best Auth0 alternatives & replacements (2026)

ZI

Zitadel

Auth0 prices by monthly active users. Zitadel is an AGPL-3.0 open-source identity platform with a cloud service priced by daily active users and a documented Auth0 batch import.

WA

Warrant

Identity and SSO platforms hold the keys to your stack. Self-hosted options keep them on your side. Authorization...

SU

Supertokens

Auth0 pricing rises with monthly active users, while SuperTokens can be self-hosted with no user cap.

OS

Oso

Identity and SSO platforms hold the keys to your stack. Self-hosted options keep them on your side. Authorization...

OR

Ory

Auth0 is a hosted identity platform, while Ory offers API-first open-source identity components that can be self-hosted or used as a managed service.

OP

OPAL (Permit.io)

Identity and SSO platforms hold the keys to your stack. Self-hosted options keep them on your side. Authorization...

KE

Keycloak

Auth0 prices by monthly active users. Keycloak is an Apache 2.0 open-source identity server with no license fee, run on your own infrastructure, with optional Red Hat commercial support.

HA

Hanko

Auth0 is a full identity platform, while Hanko is a smaller, open-source option built around passkeys that can be self-hosted.

FU

FusionAuth

Auth0 prices by monthly active users. FusionAuth offers a free self-hosted Community edition and paid cloud tiers, with a published Auth0 migration guide that covers bcrypt hash import.

CE

Cerbos

Splits fine-grained authorization out of your identity provider into a free, self-hostable policy engine.

BO

BoxyHQ

Identity and SSO platforms hold the keys to your stack. Self-hosted options keep them on your side. Enterprise...