Best Authgear Alternatives ranked by AI · updated Aug 2026

💡 Pick it for broader enterprise integrations, extensibility, and a larger identity ecosystem.

Auth0 provides a comprehensive platform for authentication and authorization.

💡 Pick it for the fastest polished authentication experience in React, Next.js, and SaaS applications.

Clerk is a modern authentication and user management platform for developers.

💡 Pick it when your application already uses Firebase and you want authentication integrated with its backend services.

Firebase Authentication provides backend services, easy-to-use SDKs, and ready-made UI libraries to authenticate users to your app.

💡 Pick it if you want authentication bundled with PostgreSQL, APIs, storage, and an open-source backend.

Supabase is an open-source alternative to Firebase offering real-time database and authentication services.

💡 Pick it when you need self-hosting, deep customization, or direct control over customer identity data.

FusionAuth is a complete identity and access management tool that provides authentication, authorization, and user management for any app.

💡 Pick it for a free, open-source IAM server when your team can operate and secure the infrastructure.

Keycloak is an open-source Identity and Access Management solution aimed at modern applications and services.