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 57,609 websites that are Firebase Authentication Customers. We know of 48,820 live websites using Firebase Authentication and an additional 8,789 sites that used Firebase Authentication historically and 20,056 websites in the United States.
Get a list of 57,609 websites using Firebase Authentication which includes location information, hosting data, contact details, 48,820 currently live websites and an additional 36,303 domains that redirect to sites in this list. 8,789 sites that used this technology previouslyand 20,056 websites in the United States currently using Firebase Authentication.
Countries
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