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 55,472 websites that are Firebase Authentication Customers. We know of 49,825 live websites using Firebase Authentication and an additional 5,647 sites that used Firebase Authentication historically and 20,555 websites in the United States.
Get a list of 55,472 websites using Firebase Authentication which includes location information, hosting data, contact details, 49,825 currently live websites and an additional 37,882 domains that redirect to sites in this list. 5,647 sites that used this technology previouslyand 20,555 websites in the United States currently using Firebase Authentication.
Countries
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