Hosted Wikis

Hosted wikis, often referred to as wikifarms, offer open and/or password protected wikis with different levels of customization and extendibility. Some of these wiki farms are free others offer paid features. A few examples are: PeanutButterWiki, SeedWiki, Wikia, and Wikispaces. Wikispaces also offers advertising free wikis for educators.

Server Hosted Wikis

This wiki software is installed on a web server, MediaWiki, which is hosted on TeachingHacks.com is an example of this type of installation of a wiki. A few examples are: MediaWiki, Docuwiki, and Twiki.

Desktop Wikis

This software is installed on the local computer and does not require a web server for administration. It works for the end user and are not shareable on the web. A few examples are: VoodooPad (Mac OS X), WikidPad (Windows) or Instiki (Windows and Mac)