Spring.NET is an open source application framework that makes building enterprise .NET applications easier.
http://www.springframework.net/index.html
Spring Social is an extension of the Spring Framework that helps you connect your applications with Software-as-a-Service (SaaS) providers such as Twitter, Facebook, Dropbox, and more! It offers an extensible service provider framework (including support for OAuth1 and OAuth2) that greatly simplifies the process of connecting local user accounts to hosted provider accounts.
Spring.NET Social supports the following runtime environments:
- .NET 2.0
- .NET Client Profile 3.5 and 4.0
- Silverlight 4.0 and 5.0
- Windows Phone 7.0 and 7.1
Spring.NET Social Home Page
Spring.NET Social Twitter API Support Home Page
Spring.NET Social Dropbox API Support Home Page
Spring.NET Social LinkedIn API Support (pre-release) Home Page