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What is Cotter?

It is an authentication SDK that lets users log in using only their Phone Numbers without a password. Integrate secure phone number login to your web/apps. It’s universal, works across apps, and doesn't require users to have a Cotter account.
Cotter is a tool in the User Management and Authentication category of a tech stack.

Cotter Integrations

Why developers like Cotter?

Here’s a list of reasons why companies and developers use Cotter
Top Reasons
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Cotter's Features

  • Skip passwords for a seamless experience
  • Skip Email and Phone Number Verification
  • Built by Developers, for Developers

Cotter Alternatives & Comparisons

What are some alternatives to Cotter?
Auth0
A set of unified APIs and tools that instantly enables Single Sign On and user management to all your applications.
Devise
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.
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.
Spring Security
It is a framework that focuses on providing both authentication and authorization to Java applications. The real power of Spring Security is found in how easily it can be extended to meet custom requirements.
See all alternatives

Cotter's Followers
3 developers follow Cotter to keep up with related blogs and decisions.
Annie D
Raj Singh
Mark Hayford