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Which tools and technologies build the Stack Exchange Network?

I see SO, itself is very incredible in respect of a web application and software development. And all the children sites built on same lines in that respect.

I am really interested to have a look at few technical details about the back-end, what all programming languages are behind this? how the scalability is handled? the data model (may be a masked one, if that is a security risk) ? or any other tech things related to SO.

Also, the chat is a of a big interest to me, and would also be for others.

If this is possible, please let me know how can we get an insight of this?

Note: I have had a look at the Stack exchange Data site, I am looking for something in more detail.

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marked as duplicate by Michael Petrotta, Yannis, Jeremy Banks, Mark Trapp, Shadow Wizard Aug 7 '12 at 6:54

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

@MichaelPetrotta Thanks for the link. Was looking for such info. – mtk Aug 7 '12 at 6:12
There is a separate post about chat:… – Shadow Wizard Aug 7 '12 at 6:57
up vote 1 down vote accepted

As far as I know, Stack Exchange source code is closed-source. I'm sure there are very good reasons which someone might be able to clarify, but I would think that some of the reasons would be

  • So we don't have clone sites popping up
  • Keeping all the experts in one place as opposed to having them spread out across different sites (one source of information)
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