Client Class Library

Name	Description
Microsoft.SharePoint.Client	Core namespace that provides types and members for working with SharePoint Foundation Web sites, list data, and users within a site collection.
Microsoft.SharePoint.Client.Utilities	Provides types and members for encoding strings, for working with security principals, and for performing specific utilities tasks.
Microsoft.SharePoint.Client.WebParts	Provides types and members for managing Web Parts within Web Parts pages.
Microsoft.SharePoint.Client.Workflow	Provides types and members for managing workflow templates and workflow associations.

The members of the Microsoft.SharePoint.Client.Application namespace are reserved for internal use and not intended to be used directly from your code.