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Fandom is a community-based service that allows anyone to create a wiki on virtually any subject. Discover, share and add your knowledge! Wikia is financed by advertisment!

Everipedia removed some of the more annoying aspects of Wikipedia and created a site that is much easier to use. Notability requirements are eliminated and citations / editing are WYSIWYG. There is also a commenting page for each link or file added.

Referata offers hosting of semantic wikis, allowing you to add, structure and store data so it can be managed, shared, browsed and analyzed in as many ways as you choose. Free: unlimited Wiki pages and 100MB file storage. 5 Languages: English, Deutsch, Español, Português do Brasil, Russian. It can also be used to host ordinary wikis. It runs a slightly modified version of the MediaWiki software, with several extensions installed.

Online collaborative wiki hosting for organizations,etc.Now it's easier than ever to build a website. Publish content, share your documents, collaborate with friends or coworkers, create a place for your community!

Gamepedia.com is the authoritative source for video game information on the internet. In addition to hosting the official wikis for over 200 titles such as Minecraft and Titanfall, we also maintain wikis for smaller titles and independent productions. Anyone can make changes to any Gamepedia wiki, with a flexible staff of wiki managers to screen and approve pending content.

Wikispaces is a hosting service (sometimes called a wiki farm) launched in March 2005. The wikis are only 1 Wiki for free if you are a educational institute. You must pay 1-5 USD for the account validation with Google Wallet per Credit Card if you want a wikispace. It offers 2GB space usage, wikimark editing and protection option for pro users. Further viewing and editing options can be purchased for $5/month.

Newslines lets people create shared timelines on any person, product or news event. Writers create news snippets that are combined into interactive multimedia timelines.

Alchetron.com is a free social encyclopedia for world where you can create, organize and learn easily using topics.

Scholarpedia is a peer-reviewed open-access encyclopedia written and maintained by scholarly experts from around the world. Scholarpedia is inspired by Wikipedia and aims to complement it by providing in-depth scholarly treatments of academic topics.

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Oppia is a free, open-source learning platform. Full of interactive activities called 'explorations', Oppia helps curious minds learn and teach.

PCGamingWiki aims to list fixes and workarounds for every single PC game

Stubia is a mobile encyclopedia that limits each article to 160 characters: this limitation makes each topic easy to understand.