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#1 on the list
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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 🎉

6k339

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.

4.6k224

warrant-dev/warrant

Warrant is a highly scalable, centralized authorization service based on Google Zanzibar. Use it to define, enforce, query, and audit application authorization and access control.

1.3k55

apache/casbin

Apache Casbin: an authorization library that supports access control models like ACL, RBAC, ABAC.

20.5k1.8k

aserto-dev/topaz

Cloud-native authorization for modern applications and APIs

1.4k47

ory/keto

The most scalable and customizable permission server on the market. Fix your slow or broken permission system with Google's proven "Zanzibar" approach. Supports ACL, RBAC, and more. Written in Go, cloud native, headless, API-first. Available as a service on Ory Network and for self-hosters.

5.4k390

permitio/opal

Python

Policy and data administration, distribution, and real-time updates on top of Policy Agents (OPA, Cedar, ...)

5.5k303

openfga/openfga

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

6k535

cedar-policy/cedar

Rust

Implementation of the Cedar Policy Language

1.8k180

apache/casbin-server

Momentum

Activity and trending