Top 12 Open-Source Alternatives to Firebase Authentication

Firebase Authentication

Application and Data, Application Utilities, and User Management and Authentication.

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Product categories

Authentication Authorization Cyber Security Developer Tools Development Endpoint Security Identity And Access Management Identity Provider Membership Management SSO Security & Privacy Two Factor Authentication

Summary

The top open-source alternatives to Firebase Authentication are Auth0, Spring Security, and OAuth2. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Auth0 Landing Page
1

Auth0

Auth0 is a program for people to get authentication and authorization services for their own business use.
Pricing:
- Open Source
#Single Sign-On #SSO #Identity Provider 193 social mentions
Spring Security Landing Page
2

Spring Security

The Spring portfolio has many projects, including Spring Framework, Spring IO Platform, Spring Cloud, Spring Boot, Spring Data, Spring Security...
Pricing:
- Open Source
#SSO #Identity Provider #Two Factor Authentication 12 social mentions
OAuth2 Landing Page
3

OA

OAuth2

Application and Data, Application Utilities, and User Management and Authentication
Pricing:
- Open Source
#SSO #Identity Provider #Identity And Access Management
JSON Web Token Landing Page
4

JSON Web Token

JSON Web Tokens are an open, industry standard RFC 7519 method for representing claims securely between two parties.
Pricing:
- Open Source
#SSO #Identity Provider #Identity And Access Management 300 social mentions
Keycloak Landing Page
5

Keycloak

Open Source Identity and Access Management for modern Applications and Services.
Pricing:
- Open Source
#SSO #Identity Provider #Identity And Access Management 4 social mentions
OmniAuth Landing Page
6

OmniAuth

OmniAuth is a flexible authentication system utilizing Rack middleware.
Pricing:
- Open Source
#SSO #Identity Provider #Identity And Access Management
Passport.js Landing Page
7

Passport.js

Simple, unobtrusive authentication for Node.js
Pricing:
- Open Source
#SSO #Identity Provider #Identity And Access Management 3 social mentions
Userbase Landing Page
8

Userbase

Add user accounts & data persistence to your static site.
Pricing:
- Open Source
#Social Networks #Identity Provider #Membership Management 6 social mentions
Frontegg Landing Page
9

Frontegg

Elegant user management, tailor-made for B2B SaaS
Pricing:
- Open Source
- Freemium
- Free Trial
#User Management And Authentication #Identity And Access Management #Security & Privacy 7 social mentions
Let's Encrypt Landing Page
10

Let's Encrypt

Let’s Encrypt is a free, automated, and open certificate authority brought to you by the Internet Security Research Group (ISRG).
Pricing:
- Open Source
#Two Factor Authentication #Identity And Access Management #Security & Privacy 338 social mentions
ZITADEL Landing Page
11

ZITADEL

Identity infrastructure, simplified for you.
Pricing:
- Open Source
- Freemium
- $100.0 / Monthly (1'000 Daily Active Users included)
#Endpoint Security #Identity And Access Management #Cyber Security 17 social mentions
Auth.js Landing Page
12

Auth.js

Authentication for the Web.
Pricing:
- Open Source
#Identity Provider #Developer Tools #Authentication 27 social mentions