* [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.

* [Nhost storage@0.12.0](https://github.com/nhost/nhost) – Open source alternative to Firebase that provides a GraphQL API and various backend services.

* [Tyro Login v2.4.0](https://github.com/hasinhayder/tyro-login) – Customizable Laravel 12 authentication UI and features with multiple layouts, social logins, OTP, captcha, and email workflows.

* [ZITADEL v3.4.9](https://github.com/zitadel/zitadel) – Identity infrastructure solution offering features like multi-tenancy, secure login, and self-service.

* [Descope SDK for Node.js v2.2.0](https://github.com/descope/node-sdk) – Node.js SDK providing backend access to user management and authentication APIs.

* [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.

* [Devise v5.0.3](https://github.com/heartcombo/devise) – Flexible Warden-based authentication for Rails.

* [supabase-py v2.28.2](https://github.com/supabase/supabase-py) – Python client for interacting with Supabase services like authentication, file storage, and real-time data.

* [Tinyauth v5.0.4](https://github.com/steveiliop56/tinyauth) – Simple authentication middleware that adds username/password login or OAuth to your docker apps.

* [Better Auth v1.5.5](https://github.com/better-auth/better-auth) – Framework-agnostic authentication and authorization library for TypeScript with a plugin ecosystem for advanced features.

* [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.

* [Passkey login for Astro, SvelteKit and other frameworks v2.1.0](https://github.com/passlock-dev/passlock) – TypeScript library simplifying WebAuthn and passkey registration and authentication for frontend and backend frameworks.

* [Magic JavaScript SDK @magic-ext/smart-acc...](https://github.com/magiclabs/magic-js) – JavaScript SDK for frictionless web3 onboarding with a focus on security and privacy.

* [PocketBase v0.22.40](https://github.com/pocketbase/pocketbase) – Go backend with an embedded database, real-time subscriptions, user management, and a simple API.

* [Convex + Better Auth v0.11.2](https://github.com/get-convex/better-auth) – Integration component for using Better Auth with Convex in early alpha development.

* [auth0-react v2.15.1](https://github.com/auth0/auth0-react) – Auth0 SDK for integrating authentication in React Single Page Applications.

* [ruby-auth0 v5.18.1](https://github.com/auth0/ruby-auth0) – Ruby API client for the Auth0 platform.

* [Descope SDK for Go v1.13.0](https://github.com/descope/go-sdk) – Go library providing access to user management and authentication APIs for backend services.

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

* [Fingerprint Scanner v1.0.1](https://github.com/antoinevastel/fpscanner) – Lightweight browser fingerprinting library for bot detection.

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

* [Official Clerk JavaScript SDKs @clerk/clerk-js@6.3....](https://github.com/clerk/javascript) – SDKs for building user management and authentication experiences.

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

* [Juno v0.0.71](https://github.com/junobuild/juno) – Serverless platform for hosting static sites, running WASM-based functions, and managing storage, authentication, and datastores with local-first, self-hosted control.

* [oc-chatgpt-multi-auth v5.4.4](https://github.com/ndycode/oc-chatgpt-multi-auth) – OpenCode plugin that enables ChatGPT Plus/Pro via OAuth with GPT-5/Codex model presets and multi-account failover.