* [OpenFGA v1.17.0](https://github.com/openfga/openfga) – High-performance authorization engine for modeling and enforcing fine-grained access control inspired by Google Zanzibar.

* [Permify v1.7.0](https://github.com/Permify/permify) – Service for building and managing fine-grained, scalable access controls quickly.

* [ZenStack v3.7.0](https://github.com/zenstackhq/zenstack) – Node.js/TypeScript toolkit that simplifies web application development with enhanced Prisma ORM and flexible authorization.

* [Frontier v0.105.0](https://github.com/raystack/frontier) – Identity and access management platform with user, organization, project, group, authentication, authorization, billing, auditing, and reporting features.

* [ThunderID v0.41.0](https://github.com/thunder-id/thunderid) – Lightweight IAM engine securing access for humans, AI agents, and machines, supporting decentralized identity and post-quantum-ready security.

* [Logto v1.40.1](https://github.com/logto-io/logto) – Modern auth infrastructure supporting OIDC, OAuth 2.1, multi-tenancy, SSO, and RBAC for SaaS and AI applications.

* [react-native-permissions 5.5.2](https://github.com/zoontek/react-native-permissions) – Unified permissions API for React Native across iOS, Android, and Windows platforms.

* [OAuth 2.0 Authorization Framework v2.0.19](https://github.com/ruby-oauth/oauth2) – RubyGem for implementing OAuth 2.0 clients with support for various authorization flows.

* [WSO2 Thunder v0.37.0](https://github.com/asgardeo/thunder) – Go-based identity management service with a flexible identity flow designer for authentication, registration, and recovery across applications, services, and AI agents.

* [ThunderID v0.37.0](https://github.com/thunder-id/thunder-id) – Lightweight Go-based identity and access management engine securing human, agent, and machine access with decentralized identity and post-quantum-ready security.

* [Heimdall v0.17.16](https://github.com/dadrus/heimdall) – Cloud-native identity-aware proxy and access-control decision service.

* [Authzed NodeJS Client v1.7.0](https://github.com/authzed/authzed-node) – Node.js client for SpiceDB that manages schemas, writes data, and checks permissions.

* [Unkey v2.0.141](https://github.com/unkeyed/unkey) – API authentication and authorization platform for modern developer workflows.

* [Ruby OAuth 1.0 / 1.0a v1.1.5](https://github.com/ruby-oauth/oauth) – RubyGem for implementing OAuth 1.0 and 1.0a clients and servers in Ruby applications.

* [Topaz v0.33.14](https://github.com/aserto-dev/topaz) – Cloud-native, policy-based authorization service for applications and APIs.

* [cedar-go v1.6.1](https://github.com/cedar-policy/cedar-go) – Go implementation of the Cedar policy language.

* [Casbin v3.11.0-snapshot.3](https://github.com/apache/casbin) – Go authorization library supporting ACL, RBAC, and ABAC models.

* [Gin-OAuth2 v1.5.16](https://github.com/zalando/gin-oauth2) – Middleware for Gin Framework enabling OAuth2 authorization and flexible access control.

* [Cerbos JavaScript SDK @cerbos/api@0.9.0](https://github.com/cerbos/cerbos-sdk-javascript) – JavaScript SDK for context-aware authorization, communicating with a policy decision point via HTTP, gRPC, or embedded PDPs.

* [Svelte Clerk v1.1.9](https://github.com/wobsoriano/svelte-clerk) – Easiest way to add authentication and user management to Svelte and SvelteKit applications.