G4S helps ASP.NET developers integrate with Salesforce. First developed in 2009, G4S is the engine of FuseIT's successful S4S integration between Sitecore and Salesforce.
Technically G4S is a .NET wrapper around the Salesforce Partner API. Comprised of several libraries (dlls), G4S makes Salesforce objects and fields available as strongly typed .NET entities.
Please contact support@fuseit.com to purchase G4S.