Am surprised to learn that Stack Overflow is based on Microsoft technologies.
- framework: Microsoft ASP.NET
- language: C#
- development environment: Visual Studio
- web framework: ASP.NET MVC
- browser framework: jQuery
- database: SQL Server 2008
- data access layer: LINQ to SQL
- source control: Subversion (now Mercurial through Kiln)
- compare tool: Beyond Compare
- source control integration: VisualSVN (now, VisualHg)
Great going Microsoft!