Firebase Authentication offers backend services, user-friendly SDKs, and pre-built UI libraries to help authenticate users for your app.
https://firebase.google.com/docs/auth
Frameworks
Get access to data on 59,202 websites that are Firebase Authentication Customers. We know of 50,452 live websites using Firebase Authentication and an additional 8,750 sites that used Firebase Authentication historically and 20,605 websites in the United States.
Get a list of 59,202 websites using Firebase Authentication which includes location information, hosting data, contact details, 50,452 currently live websites and an additional 37,087 domains that redirect to sites in this list. 8,750 sites that used this technology previouslyand 20,605 websites in the United States currently using Firebase Authentication.
Countries
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