openfga / openfga

A high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar.

Permify / permify

An open-source authorization as a service inspired by Google Zanzibar, designed to build and manage fine-grained and scalable authorization systems for any application. — Permify is now part of FusionAuth 🎉

cerbos / cerbos

Cerbos is an open-core authorization management platform for authorizing every identity and governing every action across applications, gateways, workloads, and AI agents.

authzed / spicedb

Open Source, Google Zanzibar-inspired database for scalably storing and querying fine-grained authorization data