OAuth C# Library for Google, Yahoo! Twitter

Question

I\'m looking for a library that will allow me to use OAuth in my ASP.NET/C# applications, such that I can authenticate users using one of the following OAuth providers

Answer 1

DotNetOpenAuth is open source library that supports OpenID, OAuth and support for your site visitors to login with their OpenIDs.

Twitter Libraries in different languages.

Google Data client libraries are written to support client applications to access APIs. Libraries are written in different types of languages.