Microsoft .Netshell

.Net applications

• desktop (system.windows.forms.form) 
• web (system.web.ui.page) 
• mobile (system.web.ui.mobilecontrols.mobilepage) 
• web service (system.web.services)

.Net Platform 

• .Net Framework   
• ASP.Net    {system.web}- services(*description, discovery, protocols;*caching, configuration),  user interface(*html controls, web controls;*security, sessionstate)
• Windows.Forms   
• ADO.Net    {system.data} - dataset, datarow, datatable, dataview   
• Framework Class Libraries (FCL) - system, .xml, .net, .io,.security, .threading   
• Common Language Runtime (CLR)  - base class library support, thread support,COM marshler,type checker, exception manager, security engine, debug engine, MSIL-native compiler, code mgr, GC, class loader
• Common Language Specification (CLS)
• VB.Net, C#, Managed C++, J#
• Visual Studio .Net
• Windows Server System (formerly .Net enterprise Servers)  - application center, biztalk server, commerce server, content management server, exchange server, host integration server, Internet Security & Acceleration server, Live communication server, operations manager, sharepoint portal server, sql server, systems management server, project server
• Windows  - windows 2000, windows XP/2003, longhorn