Omniauth and OAuth in Ruby

Omniauth

Omniauth is a library that standardizes authentication for web applications. It allows you to add different sign-in methods with ease. Sign-ins are known as strategies. A strategy can be Twitter via OAuth 2 protocol or it could be LDAP Omniauth strategies are usually released as gems but you can also write your own if the gem doesn't exist for the authentication system that is being implemented.

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