* [PocketBase v0.39.0](https://github.com/pocketbase/pocketbase) – Go backend with an embedded database, real-time subscriptions, user management, and a simple API.

* [Better Auth v1.6.14](https://github.com/better-auth/better-auth) – Framework-agnostic authentication and authorization library for TypeScript with a plugin ecosystem for advanced features.

* [codex-multi-auth v2.2.0](https://github.com/ndycode/codex-multi-auth) – Multi-account OAuth manager for the official Codex CLI with resilient routing, quota-aware rotation, and terminal-first diagnostics.

* [Nhost @nhost/dashboard@2.6...](https://github.com/nhost/nhost) – Open source alternative to Firebase that provides a GraphQL API and various backend services.

* [Tyro Login v2.8.0](https://github.com/hasinhayder/tyro-login) – Customizable Laravel 12 authentication UI and features with multiple layouts, social logins, OTP, captcha, and email workflows.

* [oc-codex-multi-auth v6.2.0](https://github.com/ndycode/oc-codex-multi-auth) – OpenCode plugin enabling ChatGPT Plus/Pro OAuth access, GPT-5/Codex model presets, multi-account rotation with failover, and guided setup.

* [ThunderID v0.41.0](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.

* [Logto v1.40.1](https://github.com/logto-io/logto) – Modern auth infrastructure supporting OIDC, OAuth 2.1, multi-tenancy, SSO, and RBAC for SaaS and AI applications.

* [ruby-auth0 v5.20.0](https://github.com/auth0/ruby-auth0) – Ruby API client for the Auth0 platform.

* [supabase-py v2.30.1](https://github.com/supabase/supabase-py) – Python client for interacting with Supabase services like authentication, file storage, and real-time data.

* [ZeroID v1.5.0](https://github.com/highflame-ai/zeroid) – Identity infrastructure that issues verifiable agent credentials, enforces delegated on-behalf-of chains, and enables real-time revocation.

* [Heimdall v0.17.16](https://github.com/dadrus/heimdall) – Cloud-native identity-aware proxy and access-control decision service.

* [CouchAuth v0.28.0](https://github.com/perfood/couch-auth) – Full-featured Node.js/Express authentication for APIs and SPAs using CouchDB or Cloudant, with token-based and OAuth provider support.

* [Official Clerk JavaScript SDKs @clerk/clerk-js@6.13...](https://github.com/clerk/javascript) – SDKs for building user management and authentication experiences.

* [Frontier v0.104.1](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 v2.5.3](https://github.com/passlock-dev/passlock) – TypeScript library simplifying WebAuthn and passkey registration and authentication for frontend and backend frameworks.

* [Descope JS web-component-3.65.0](https://github.com/descope/descope-js) – Collection of JavaScript client authentication SDKs, embeddable widgets, and helper libraries for integrating authentication flows and session management.