Microsoft

GUI :

ASP.NET, Win Forms, WPF, Silverlight, Ajax

Middleware :

.NET Framework (including WF & CardSpace),COM+ & Windows Services, Commerce Server, Microsoft BizTalk Server

EAI & BPM :

BizTalk Server, Microsoft Dynamics, Microsoft CRM

CMS :

Microsoft Office Sharepoint Services, Kentico

Framework :

Microsoft Software Factories & Application Blocks, DotNetNuke

Configuration Management :

Visual SourceSafe, Cruise Control

Reporting :

SQL Server Reporting Services, Crystal Reports

Communication :

Web Services, SOAP, XML, WCF

Rich UI :

Telerik, Infragistics, Dundas Tools

Testing :

NUnit, Visual Studio Load Test