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Wikia 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!

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. …

Wikispaces is a hosting service (sometimes called a wiki farm) launched in March 2005. The wikis are limited to 5 members and only 1 Wiki for free. You must pay …

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...

A collaborative wiki of lists. Lists support images, maps, file attachments, as well as revision history. All lists and items can receive votes and comments, and the highest voted lists …

Wikkii provides fully featured hosting for wikis on any topic, and best of all it's 100% free. All you need to do is Register as a user there, then click …

A free wikifarm project allowing to keep private wiki and build it up through MediaWiki syntax. It is also possible to configure different user group rights by yourself.