Stack Auth

Stack Auth is the open-source Auth0 alternative. We are your login and signup page, and everything that comes with that.

Authentication & Authorization

Free for dev

Yes

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Aserto provides cloud-native authorization as a service for developers. Add fine-grained RBAC, ABAC, or ACL to your application in under a day.

Rapidly integrate authentication and authorization for web, mobile, and legacy applications so you can focus on your core business.