* [ZITADEL v4.17.0](https://github.com/zitadel/zitadel) – Identity infrastructure solution offering features like multi-tenancy, secure login, and self-service.

* [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.

* [Cerbos v0.55.0](https://github.com/cerbos/cerbos) – Context-aware, YAML-defined access control with APIs for dynamic authorization decisions.

* [ZenStack v3.9.0](https://github.com/zenstackhq/zenstack) – Node.js/TypeScript toolkit that simplifies web application development with enhanced Prisma ORM and flexible authorization.

* [Magistrala v0.50.0](https://github.com/absmach/magistrala) – Industrial IoT messaging and device management platform for scalable, secure multi-protocol deployments.

* [Logto v1.42.0](https://github.com/logto-io/logto) – Modern auth infrastructure supporting OIDC, OAuth 2.1, multi-tenancy, SSO, and RBAC for SaaS and AI applications.

* [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.

* [Permify v1.7.3](https://github.com/Permify/permify) – Service for building and managing fine-grained, scalable access controls quickly.

* [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 control-api/v1.1.18](https://github.com/unkeyed/unkey) – API authentication and authorization platform for modern developer workflows.

* [RBAC Manager v1.10.2](https://github.com/FairwindsOps/rbac-manager) – RBAC Manager is a Kubernetes operator that simplifies authorization by applying declarative RBAC configuration through custom resources.

* [Heimdall v0.17.19](https://github.com/dadrus/heimdall) – Cloud-native identity-aware proxy and access-control decision service.

* [Cerbos JavaScript SDK @cerbos/react@0.5.0](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.