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Firebase Authentication

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

20 Alternatives To Firebase Authentication

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Amazon Cognito

Amazon Cognito lets you add user sign-up, sign-in, and access control to your web and mobile apps quickly and easily. It scales to millions of users and supports sign-in with social identity providers and enterprise identity providers via SAML 2.
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Auth0

Auth0 is a program for people to get authentication and authorization services for their own business use.

Authpack

Complete user auth system installed with 8 lines of code.

Azure Multi-Factor Authentication

Azure Multi-Factor Authentication helps safeguard access to data and applications while meeting user demand for a simple sign-in process.

Cotter

One-click phone number login and checkout

FreeRadius

FreeRADIUS is responsible for authenticating one third of all users on the Internet.

JSON Web Token

JSON Web Tokens are an open, industry standard RFC 7519 method for representing claims securely between two parties.

OAuth2

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

Okta

Enterprise-grade identity management for all your apps, users & devices

OmniAuth

OmniAuth is a flexible authentication system utilizing Rack middleware.
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OpenID Connect

OpenID Connect page

OpenLDAP

OpenLDAP Software is an open source implementation of the Lightweight Directory Access Protocol.

RSA SecurID

RSA SecurID is a multi-factor authentication and identity assurance solution.

Spring Security

The Spring portfolio has many projects, including Spring Framework, Spring IO Platform, Spring Cloud, Spring Boot, Spring Data, Spring Security…
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Stormpath

Powerful authentication, authorization, and user management for any application

Userbase

Add user accounts & data persistence to your static site.

WSO2 Identity Server

WSO2 Identity Server efficiently undertakes the complex task of identity management across enterprise applications, services and APIs.

WorkOS

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

OAuth

OAuth is an open standard for authorization. It allows users to share their private resources (e.g.
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sso

Utilities, Application Utilities, and User Management and Authentication