Stack is an open-source, self-hostable, and highly customizable authentication and user management system.
Cost / License
- Freemium
- Open Source
Application type
Platforms
- Online
- Self-Hosted
- Software as a Service (SaaS)


Pocket ID is described as 'The goal of Pocket ID is to be a simple and easy-to-use. There are other self-hosted OIDC providers like Keycloak or ORY Hydra but they are often too complex for simple use cases' and is a identity management tool in the network & admin category. There are more than 25 alternatives to Pocket ID for a variety of platforms, including Web-based, SaaS, Self-Hosted, Linux and Mac apps. The best Pocket ID alternative is VoidAuth, which is both free and Open Source. Other great apps like Pocket ID are Keycloak, authentik, ZITADEL and Auth0.
Stack is an open-source, self-hostable, and highly customizable authentication and user management system.


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