This question keeps coming up a lot on Stack Overflow for some reason:
What was Stack Overflow built with?
Some even wondered if Stack Overflow was built in Ruby on Rails. I consider that a compliment!
This question has been covered in some detail in our podcasts, of course, but I know not everyone has time to listen to a bunch of audio footage to find the answer to their question. So, in that spirit, here's the technology "stack" of Stack Overflow, the stuff Jarrod, Geoff, and I used to build it:
|development environment||Visual Studio|
|web framework||ASP.NET MVC|
|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)|