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Auth0 vs OAuth2: What are the differences?

Developers describe Auth0 as "Token-based Single Sign On for your Apps and APIs with social, databases and enterprise identities". A set of unified APIs and tools that instantly enables Single Sign On and user management to all your applications. On the other hand, OAuth2 is detailed as "An open standard for access delegation". It is an authorization framework that enables a third-party application to obtain limited access to an HTTP service, either on behalf of a resource owner by orchestrating an approval interaction between the resource owner and the HTTP service, or by allowing the third-party application to obtain access on its own behalf.

Auth0 and OAuth2 can be primarily classified as "User Management and Authentication" tools.

Binary.com, Chattermill, and White Rabbit Express are some of the popular companies that use Auth0, whereas OAuth2 is used by Ataccama, BookMeBus, and Mubasher.info. Auth0 has a broader approval, being mentioned in 121 company stacks & 55 developers stacks; compared to OAuth2, which is listed in 10 company stacks and 5 developer stacks.

Decisions about Auth0 and OAuth2
Brent Maxwell
Brent Maxwell
CTO at Style Arcade · | 3 upvotes · 1.3K views
Migrated
from
Amazon CognitoAmazon Cognito
to
Auth0Auth0

I started our team on Amazon Cognito because I was a Solutions Architect at AWS and found it really easy to follow the tutorials and get a basic app up and running with it.

When our team started working with it, they very quickly became frustrated because of the poor documentation. After 4 days of trying to get all the basic passwordless auth working, our lead engineer made the decision to abandon it and try Auth0... and managed to get everything implemented in 4 hours.

The consensus was that Cognito just isn't mature enough or well-documented, and that the implementation does not cater for real world use cases the way that it should. I believe Amplify has made some of this simpler, but I would still recommend Auth0 as it's been bulletproof for us, and is a sensible price.

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      What is Auth0?

      A set of unified APIs and tools that instantly enables Single Sign On and user management to all your applications.

      What is OAuth2?

      It is an authorization framework that enables a third-party application to obtain limited access to an HTTP service, either on behalf of a resource owner by orchestrating an approval interaction between the resource owner and the HTTP service, or by allowing the third-party application to obtain access on its own behalf.
      What companies use Auth0?
      What companies use OAuth2?

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      What tools integrate with Auth0?
      What tools integrate with OAuth2?

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      What are some alternatives to Auth0 and OAuth2?
      Stormpath
      Stormpath is an authentication and user management service that helps development teams quickly and securely build web and mobile applications and services.
      Amazon Cognito
      You can create unique identities for your users through a number of public login providers (Amazon, Facebook, and Google) and also support unauthenticated guests. You can save app data locally on users’ devices allowing your applications to work even when the devices are offline.
      Okta
      Connect all your apps in days, not months, with instant access to thousands of pre-built integrations - even add apps to the network yourself. Integrations are easy to set up, constantly monitored, proactively repaired and handle authentication and provisioning.
      Firebase
      Firebase is a cloud service designed to power real-time, collaborative applications. Simply add the Firebase library to your application to gain access to a shared data structure; any changes you make to that data are automatically synchronized with the Firebase cloud and with other clients within milliseconds.
      Keycloak
      It is an Open Source Identity and Access Management For Modern Applications and Services. It adds authentication to applications and secure services with minimum fuss. No need to deal with storing users or authenticating users. It's all available out of the box.
      See all alternatives
      Interest over time
      How much does Auth0 cost?
      How much does OAuth2 cost?
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