Last August, Microsoft released the Open XML Format SDK 1.0. This innocuous-sounding SDK is a full set of managed classes that allow developers to load and manipulate Open XML documents using a managed API. Not to say you couldn't do this before -- using the Office InterOp assemblies, but now developers get unparalleled performance and a 100% Managed code framework to manipulate Open XML Documents. Download the SDK here.Download Code Snippets for Visual Studio 2005 here. Of course, there's also an ecosystem to support Open XML efforts. This includes several training modules and videos effectively teaching developers about using Open XML in their applications. MSDN: Open XML Developer Workshop Technorati Tags: VSTO,Office,Open XML