Authentication & Identity

Auth.js

Flexible runtime-agnostic authentication library for web applications supporting multiple frameworks and identity providers.

Auth0

Flexible and secure authentication and authorization platform for web, mobile, and AI agent applications.

Better Auth

Comprehensive authentication framework for TypeScript with composable, plugin-based architecture, multi-tenancy, and enterprise features.

Clerk

Full-stack authentication and user management platform with drop-in UI components for web and mobile applications.

Corbado

Passkey intelligence platform for monitoring adoption, identifying login blockers, and managing rollout readiness across existing IDPs.

Divjoy

A React codebase generator that provides pre-configured stacks including authentication, database, payments, and UI components.

Firebase Authentication

An end-to-end identity solution supporting passwords, federated logins, and multi-platform sign-in for applications.

JWT.io

JSON Web Tokens decoder, verifier, and generator tool for web applications.

Integrated developer platform providing authentication, billing, feature management, and user management for SaaS products.

Passport.js

Authentication middleware for Node.js, providing modular and flexible integration with Express and support for hundreds of authentication strategies.

WorkOS

Enterprise-ready developer platform providing APIs for Single Sign-On (SSO), SCIM provisioning, user management, and audit logs.

Fine-grained authorization service providing API and SDKs for role-based and relationship-based access control.

Zenlogin

Suspicious login detection API that identifies unusual sign-in attempts and notifies users via automated email alerts with map integration.