This file can be downloaded and unzipped to provide the source code for a version of the C# Project used to create the Twitter integration.  The solution contains 3 projects

SageCRMTwitter:  This is C# source project for Twitter dlls. 

And has the following 2 dependencies

Hammock.ClientProfile: Hammock is an HTTP API library for .NET that greatly simplifies consuming and wrapping RESTful services

TweetSharp.NET35.  This is C# source project for tweetSharp API. TweetSharp is a fast, clean wrapper around the Twitter API.

Where reference is made to 3rd party script and code libraries you must ensure that you have satisfied the necessary licensing terms and conditions.