* [OpenFGA v1.19.0](https://github.com/openfga/openfga) – High-performance authorization engine for modeling and enforcing fine-grained access control inspired by Google Zanzibar.

* [Authorizer 2.4.0](https://github.com/authorizerdev/authorizer) – Authentication and authorization server that self-hosts and integrates with your database for user management and session handling.

* [ThunderID v1.0.0](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.

* [Authula v1.42.0](https://github.com/Authula/authula) – Embeddable Go library or standalone auth server with plugin-based, composable authentication and extensible hooks.

* [Frontier v0.115.0](https://github.com/raystack/frontier) – Identity and access management platform with user, organization, project, group, authentication, authorization, billing, auditing, and reporting features.

* [ZITADEL v3.4.15](https://github.com/zitadel/zitadel) – Identity infrastructure solution offering features like multi-tenancy, secure login, and self-service.

* [ZenStack v3.9.1](https://github.com/zenstackhq/zenstack) – Node.js/TypeScript toolkit that simplifies web application development with enhanced Prisma ORM and flexible authorization.

* [zed v1.2.1](https://github.com/authzed/zed) – Command-line client for managing SpiceDB.

* [Open Foundry v0.2.0](https://github.com/syzygyhack/open-foundry) – Schema-driven ontology platform that provides semantic, kinetic, and security layers for building queryable, actionable operational digital twins.

* [Melange v0.9.0](https://github.com/pthm/melange) – OpenFGA-to-PostgreSQL compiler that generates specialized PL/pgSQL functions querying your existing tables for relationship-based access control.

* [Svelte Clerk v1.1.15](https://github.com/clerk-community/svelte-clerk) – Svelte and SvelteKit authentication SDK that adds sign up, sign in, and profile management quickly.

* [Unkey api/v1.1.27](https://github.com/unkeyed/unkey) – API authentication and authorization platform for modern developer workflows.

* [Heimdall v0.17.21](https://github.com/dadrus/heimdall) – Cloud-native identity-aware proxy and access-control decision service.