* [ZITADEL v4.12.0](https://github.com/zitadel/zitadel) – Identity infrastructure solution offering features like multi-tenancy, secure login, and self-service.

* [auth0.js v9.31.0](https://github.com/auth0/auth0.js) – Browser-side JavaScript SDK for handling authentication, authorization, and management API calls.

* [WSO2 Thunder v27.0.0](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.

* [OpenFGA v1.12.0](https://github.com/openfga/openfga) – High-performance authorization engine for modeling and enforcing fine-grained access control inspired by Google Zanzibar.

* [Svelte Clerk v1.0.0](https://github.com/wobsoriano/svelte-clerk) – Easiest way to add authentication and user management to Svelte and SvelteKit applications.

* [ZenStack v3.4.0](https://github.com/zenstackhq/zenstack) – Node.js/TypeScript toolkit that simplifies web application development with enhanced Prisma ORM and flexible authorization.

* [Logto v1.37.0](https://github.com/logto-io/logto) – Modern auth infrastructure supporting OIDC, OAuth 2.1, multi-tenancy, SSO, and RBAC for SaaS and AI applications.

* [react-native-permissions 5.5.0](https://github.com/zoontek/react-native-permissions) – Unified permissions API for React Native across iOS, Android, and Windows platforms.

* [GoBetterAuth v2.12.0](https://github.com/GoBetterAuth/go-better-auth) – Scalable authentication for Go apps or standalone servers offering email/password auth, sessions, OAuth, and extensible hooks.

* [Permify v1.6.6](https://github.com/Permify/permify) – Service for building and managing fine-grained, scalable access controls quickly.

* [Frontier v0.93.0](https://github.com/raystack/frontier) – Identity and access management platform with user, organization, project, group, authentication, authorization, billing, auditing, and reporting features.

* [Official SpiceDB Go Client v1.8.0](https://github.com/authzed/authzed-go) – Go client library providing gRPC APIs to manage schemas, relationships, and perform permission checks.

* [Consul v2.0.1](https://github.com/makandra/consul) – Scope-based authorization for Ruby on Rails.

* [Topaz v0.33.12](https://github.com/aserto-dev/topaz) – Cloud-native, policy-based authorization service for applications and APIs.

* [Unkey v2.0.92](https://github.com/unkeyed/unkey) – API authentication and authorization platform for modern developer workflows.

* [caddy-security v1.1.32](https://github.com/greenpau/caddy-security) – Caddy v2 plugin providing authentication, authorization, and credential management for OAuth/OIDC, SAML, LDAP, basic auth, and JWT/PASETO.

* [Magistrala v0.19.1](https://github.com/absmach/magistrala) – Industrial IoT messaging and device management platform for scalable, secure multi-protocol deployments.

* [Melange v0.7.3](https://github.com/pthm/melange) – OpenFGA-to-PostgreSQL compiler that generates specialized PL/pgSQL functions querying your existing tables for relationship-based access control.

* [Heimdall v0.17.11](https://github.com/dadrus/heimdall) – Cloud-native identity-aware proxy and access-control decision service.

* [Authorizer 2.0.0-rc.6](https://github.com/authorizerdev/authorizer) – Authentication and authorization server that self-hosts and integrates with your database for user management and session handling.

* [Auth rc2.187.0-rc.15](https://github.com/supabase/auth) – JWT-based authentication and user-management server supporting email, password, magic link, phone, and external providers.