My Sharepoint Learnings

Microsoft.SharePoint Microsoft.SharePoint.Linq Microsoft.SharePoint.Search Microsoft.SharePoint.Security Microsoft.SharePoint.Portal Microsoft.SharePoint.Publishing Microsoft.SharePoint.Search.Extended.Administration Microsoft.SharePoint.Search.Extended.Administration.Common Microsoft.Office.Excel.Server.Udf Microsoft.Office.Server Microsoft.Office.Server.Search Microsoft.Office.Server.UserProfiles Microsoft.SharePoint dll Namespaces available in Sandbox Microsoft.SharePoint Microsoft.SharePoint.Administration Microsoft.SharePoint.Navigation Microsoft.SharePoint.UserCode Microsoft.SharePoint.Utilities Microsoft.SharePoint.WebControls Microsoft.SharePoint.WebPartPages Microsoft.SharePoint.Workflow To know the classes that can be used refer - MSDN