Oso Modeler alternatives

Stytch is a full stack authentication and authorization platform, whose APIs make it simple to seamlessly onboard, authenticate and engage users. Improve security and user experience by going passwordless.

Authorizer is an open-source authentication and authorization solution for your applications. Bring your database and have complete control over the user information. You can self-host authorizer instances and connect to any SQL database.

Oso is a batteries-included system for authorization. Drop Oso Cloud into your apps to quickly add roles, sharing, fine-grained access, or any other access model you can think of.