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Wikipedia:FAQ/Forking

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Forking FAQ
Frequently asked questions (FAQs)
This page is about external forks of Wikipedia content. For internal forking, see Wikipedia:Content forks.

What is a fork?

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Copying all or part of Wikipedia, and developing it independently of the original, is forking. Typically, a fork is implemented as another website (though printed forks are possible). There are forks of the whole encyclopedia, and there are specialized encyclopedias that start as a copy of a collection of articles from Wikipedia about a specific subject. Wikipedia's content is made available in data dumps. A list of forks is available at Wikipedia:Mirrors and forks/All.

What is the difference between a mirror and a fork?

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A mirror is an exact copy. A fork is a copy that has been changed, diverging from the original path of development, like a fork in the road. Mirrors provide alternative access to Wikipedia (when access is needed offline, or when the Wikipedia site is down). Forks allow you to start with Wikipedia content, and transform it into something else.

Am I allowed to fork Wikipedia?

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Yes, as long as you follow the terms of Wikipedia's licenses. See Wikipedia:Copyrights.

Can I fork individual Wikipedia articles?

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Yes.
Wikipedia considers each Wikipedia article to be an individual document. Moreover, for the purposes of creating derivative works of individual Wikipedia articles, Wikipedia considers a direct link-back to a particular Wikipedia article as being in full compliance with the Creative Commons Attribution-Sharealike 4.0 Unported License (CC BY-SA), provided your work is also licensed under CC BY-SA.
Most (but not all) of our articles can be reused under the GNU Free Documentation License (GFDL) (unversioned). See Wikipedia:Copyrights#Reusers' rights and obligations for how to identify text which is not available under the GFDL.

How do I download Wikipedia content?

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Regular dumps of the database can be found at https://dumps.wikimedia.org/.

How much storage is required for a copy of the English Wikipedia?

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The data dump of all pages and their histories is a several-gigabyte file, which according to the warnings about decompression size at the database download page, could theoretically decompress to at least a terabyte.

How do I install Wikipedia's software?

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Wikipedia runs on MediaWiki. Make sure to check if your computer meets the minimum system requirements, install it on the official website of MediaWiki, and follow the instructions.
See Help:Template, Wikipedia:Customisation and mw:Manual:Using content from Wikipedia for lists of things that you will need to add to MediaWiki to start making it be like Wikipedia.

What kind of computer system do I need to run Wikipedia software?

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Minimum system requirements, and installation instructions can be found here.


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