The Document Processing SDK is an easy-to-use infrastructure containing developer focused examples for the libraries included in Telerik Document Processing (http://docs.telerik.com/devtools/document-processing).
Telerik Document Processing is currently distributed as free addition to other paid products, e.g. UI for ASP.NET MVC, UI for ASP.NET AJAX, UI for WPF, UI for Silverlight, UI for WinForms and you can download the binaries from your telerik.com account.