Implement a complete authentication system that supports email & password, Facebook, Twitter, GitHub and Google Sign-In. Already have an account system? Easily integrate it with our custom auth service to give your users secure access to many of Firebase's other features.
★ Flexible SDKs on top of reliable Google infrastructure
★ Optional, out-of-the-box authentication UI optimized to give your users the best experience
★ Advanced functionality like email verification, anonymous accounts, and account linking