OAuth

An Open Source OAuth library

OAuth is an authentication protocol that allows users (for example Twitter users) to approve applications to act on their behalf without sharing their password. More information can be found at oauth.net

In building our applications we forked an existing OAuth project and made it work with the latest (May 2011) OAuth implementation from Twitter. We use this in our iOS and Android applications.

https://github.com/stereoket/oauth-adapter

More about OAuth

Twitter developer OAuth FAQ http://dev.twitter.com/pages/oauth_faq