CMS:
Microsoft Office Sharepoint Services, Kentico

Database:
MS SQL Server (including SSRS, SSIS & SSAS and
Service Broker), MS Access

Reporting:
SQL Server Reporting Services, Crystal Reports

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

Framework:
Microsoft Software Factories & Application Blocks, DotNetNuke

Communication:
Web Services, SOAP, XML, WCF

EAI & BPM:
BizTalk Server, Microsoft Dynamics, Microsoft CRM

Configuration Management:
Visual SourceSafe, Cruise Control

Rich UI:
Telerik, Infragistics, Dundas Tools

Testing:
NUnit, Visual Studio Load Test