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What was Stack Overflow built with?

Does anybody know which PHP script Super User is using? I plan to set-up a web site for college education issues. But I want it to have a script like superuser.com.

Where can I get this script?

  • 21
    It's just a modded version of phpBB really.
    – random
    Commented Oct 17, 2009 at 13:23

3 Answers 3


It's not PHP, it's ASP.NET.

See here: http://blog.stackoverflow.com/2008/09/what-was-stack-overflow-built-with/


As already mentioned, StackOverflow/ServerFault/SuperUser/... uses ASP.NET and the whole Microsoft Stack.

You might want to read the discussion about SO clones one meta.stackoverflow.com (which is where your question belongs IMHO).

  • or even meta.stackoverflow.com ;)
    – ChrisF
    Commented Oct 17, 2009 at 9:55
  • no, meta is built with ASP Classic.
    – Ólafur Waage
    Commented Oct 17, 2009 at 14:51
  • I thought meta was built with waffles and ponies
    – Greg
    Commented Oct 18, 2009 at 10:41

Complex PHP websites are made of more than one script. A website like SU wouldn't be very difficult with PHP and a database, but SU was made with love :3

So, you want something like SU? Get learning PHP, it'll be great fun :)

  • O rly? blog.bitquabit.com/2009/07/01/one-which-i-call-out-hacker-news
    – George Stocker
    Commented Oct 17, 2009 at 15:53
  • Note I was saying like with exactly that in mind. Something where you can post questions and then other users can post answers on them is something anybody with a few weeks of PHP knowledge could do. Building something as slick, visually impressive, integrated, and speedy as SO is certainly not.
    – Phoshi
    Commented Oct 17, 2009 at 18:36

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