* [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. * [ZITADEL v3.4.9](https://github.com/zitadel/zitadel) – Identity infrastructure solution offering features like multi-tenancy, secure login, and self-service. * [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. * [Svelte Clerk v1.1.0](https://github.com/wobsoriano/svelte-clerk) – Easiest way to add authentication and user management to Svelte and SvelteKit applications. * [Permify v1.6.6](https://github.com/Permify/permify) – Service for building and managing fine-grained, scalable access controls quickly. * [Frontier v0.93.2](https://github.com/raystack/frontier) – Identity and access management platform with user, organization, project, group, authentication, authorization, billing, auditing, and reporting features. * [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.