🆚 Auth0 vs. Firebase Authentication
- 📈 Auth0 is twice as popular as Firebase Authentication.
- 🌎 Auth0 is more popular in the United States, the United Kingdom, and Australia.
- 🌍 Firebase Authentication is more popular in India, Spain, and Italy.
Auth0
Firebase AuthenticationType
About
Auth0 is a cloud-based identity and authentication management platform that allows developers to add authentication to their applications.
Firebase Authentication is a backend authentication service that enables applications to sign in users using email and password, third-party identity providers, email links, and phone numbers.
It offers sign-in with services such as 
Google, 
Facebook, 
Apple, and 
GitHub, provides ready-made UI components and SDKs for web, iOS, Android, and 
Unity, supports anonymous accounts, and includes phone and multi-factor authentication if used with Identity Platform.
Headquarters
Pricing
(username/password + social connections)
(SAML, LDAP, AD)
(email, phone, social)
(OpenID Connect, SAML)
Categories
Popularity
Determined by the number of sites using each technology.
Market share
Popularity by country
Determined by the number of sites detected from each country.
Awards
- 🥈 Second most popular in Australia in the Authentication category.
- 🥈 Second most popular in Canada in the Authentication category.
- 🥉 Third most popular in the United States in the Authentication category.
- 🥉 Third most popular in Switzerland in the Authentication category.
- 🥉 Third most popular in Denmark in the Authentication category.
- ⭐ 4th most popular in India in the Authentication category.
- ⭐ 5th most popular in Australia in the Authentication category.
- ⭐ 5th most popular in Canada in the Authentication category.
Popularity by domain category
Determined by the number of sites in each category.
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
Supabase
Keycloak
Auth.js
Clerk
Microsoft Identity Platform
Sign In with LinkedIn
Google company profile🗃️ About This Data
- We evaluate the popularity of technologies based on the number of websites where we detect their usage.
- Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
- This report is based on the analysis of 3,363,931 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.