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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.
OAuth2 is a tool in the User Management and Authentication category of a tech stack.

Who uses OAuth2?

26 companies reportedly use OAuth2 in their tech stacks, including Third party services, Student Success Link, and Ataccama ONE.

73 developers on StackShare have stated that they use OAuth2.

OAuth2 Integrations

OpenID Connect, Aqueduct, Mobsted, Backlog, and Fat Free CRM are some of the popular tools that integrate with OAuth2. Here's a list of all 5 tools that integrate with OAuth2.

Why developers like OAuth2?

Here’s a list of reasons why companies and developers use OAuth2
Top Reasons
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OAuth2 Alternatives & Comparisons

What are some alternatives to OAuth2?
OpenID Connect
It is a simple identity layer on top of the OAuth 2.0 protocol. It allows Clients to verify the identity of the End-User based on the authentication performed by an Authorization Server, as well as to obtain basic profile information about the End-User in an interoperable and REST-like manner.
A set of unified APIs and tools that instantly enables Single Sign On and user management to all your applications.
Devise is a flexible authentication solution for Rails based on Warden
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.
JSON Web Token
JSON Web Token is an open standard that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. This information can be verified and trusted because it is digitally signed.
See all alternatives

OAuth2's Followers
56 developers follow OAuth2 to keep up with related blogs and decisions.
Vladimir Sinyavsky
Utkarsh Bhavsar
Patricia Villela
Matthew Stokeley
Przemek Broda
John Alton
Milton  Jacomini