Fandom

Wikia is a free web hosting service that uses a fork of MediaWiki as its hosting engine and is known for its wide variety of MediaWiki extensions. See [http://www.wikia.com/ Wikia's website] or the Wikipedia article on Wikia to find out more about Wikia in general.

Source Code
Wikia's Git repository can be accessed at [https://github.com/wikia/app github.com/wikia/app]. Please note that it is an entirely separate repository from Wikimedia's and is not affiliated with the official Git.

The Wikia's SVN repository still is available at [http://svn.wikia-code.com svn.wikia-code.com] and their [http://trac.wikia-code.com Trac] browser although [http://dev.wikia.com/wiki/User_blog:Relwell/Wikia_is_moving_to_GitHub! these are now unmaintained].

Extensions
Some of Wikia's extensions can be found at Wikimedia's official Git repository and their appropriate extension pages are located at Category:Extensions by Wikia, Inc.

Other extensions are still located in Wikia's own Git repository, in the folder /extensions/wikia/. It is likely that most of the extensions have dependency on Nirvana (found at /includes/wikia/nirvana), the EasyTemplate class (found at /includes/wikia/ folder on Wikia's Git) and/or they might require custom database tables.

Source code comments are not as common as in the official MediaWiki either.