Firebase Authentication

Auth

Managed authentication backend supporting email, phone, and federated identity providers.

Free Tier

Free for most providers; phone auth includes a limited free monthly verification quota.

Website

https://firebase.google.com/products/auth

Alternatives

Tags

authmobilefullstacksecurity

Comparison Attributes

Auth Support: Email, phone, and many federated providers
Pricing: Free tier; phone auth billed beyond free quota
Learning Curve: Easy

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