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I recently noticed a website, discuss.codechef.com with Q&A and competitions that is based in India. Instantly, I notice that it looks almost identical to an SE site:

codechef questions codechef user profile

I am curious if this is a blatant knock-off site or if it uses the SE engine? I was unable to find any mentions of StackExchange in their About section. Also, SO has the codechef tag, , so it would be horrible on their part to simply copy the site's design...

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You mean its not part of so already? –  Prof Pickle Apr 3 '13 at 8:30

2 Answers 2

up vote 7 down vote accepted

The double diamonds (and the radio buttons near the search bar) kind of imply it's based on http://www.osqa.net/

Further, it says: "Powered by OSQA" at the bottom.

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It looks like OSQA is a knock off of SE... –  Austin Henley Apr 3 '13 at 6:33
Yup - was just doing to add that @Mr.Wizard :) –  Jon Clements Apr 3 '13 at 6:33
@AustinHenley Well - it's meant to be an OS alternative to the SE sites... It's not really actively supported though - the company that developed it appears to be trying to sell integrated help sites and stuff - plus it's quite buggy - I've had a play with it, but can't say I was overly impressed... –  Jon Clements Apr 3 '13 at 6:35
As you can see on their list of websites that use OSQA, it is more than just an alternative. Several sites have "overflow" or "exchange" in the name. –  Austin Henley Apr 3 '13 at 6:37

There are two easy ways to know if a site belongs to the Stack Exchange network.

  1. Any genuine Stack Exchange site will have the Stack Exchange™ MultiCollider SuperDropdown™ (aka "global inbox") on the top left on any page: (example for site with its own domain which is part of the network)

    enter image description here

  2. Any genuine Stack Exchange site will appear in the "All Sites" list.

The site you mentioned fails both the above so it's not using the Stack Exchange engine and not part of the network.

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I know it isn't part of the network. I was asking if it uses the engine. Previously, I have read that they sell the engine. –  Austin Henley Apr 3 '13 at 7:24
@Austin oh, thought you meant if it's genuine site. They don't "sell" the engine, they expose public API that let you fetch data from it, after getting a key, then use it under specific terms. –  Shadow Wizard Apr 3 '13 at 7:36
No, they sell (or sold) an enterprise edition of the engine. However, I read that those aren't public anyways so that can't be it either! –  Austin Henley Apr 3 '13 at 7:50

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