In v2011 volume 1, the OAuth library that we’ve developed for internal use, is available to all our customers.
The DevExpress OAuth library supports the consumer side for OAuth 1.0 and OAuth 2.0 Draft as well as the provider side for OAuth 1.0.
The following example How to login to Twitter, Google and Facebook using OAuth demonstrates how to login to some of the most popular services that support OAuth authentication.

Cheers
Azret