The best example of a Wiki is Wikipedia, the free, editable online encyclopedia. While it has been criticized for its accuracy at times, it is nevertheless a valuable resource and is particularly strong at providing up to date information about computer and online technologies. While not perfect, it proves the web can be a powerful place to disseminate information and to open its gates of information literally to anyone with a computer and web connection.

Wiki is an abbreviated Hawaiian term which means fast. The full term is Wiki Wiki or Fast Fast. Wikis are editable websites which users are allowed to collaborate, add and share information by being able to actually edit the webpage being viewed. A Wiki is actually software that needs to be installed on a server or local computer. Knowledge of back end scripting in necessary to get the Wiki up and running but the software itself is usually free. There are a number of Wiki software packages available. Wikis can be installed on just your local, personal computer, on a peer-to-peer network without a server or on a Wide Area Network (WAN) such as the World Wide Web. Below are some examples of Wikis for each of these instances.

Local Wiki - Resides only on your local computer and is used to quickly find and edit information found only on your computer. It can be handy for organizing certain types of information. It is rare that you see this type of Wiki, but good to know it exists.
TiddlyWiki

Peer to Peer Wiki - For use in direct computer to computer sharing and editing of webpages. There is only one software title that falls into this category.
Code Co-Op

Wiki - For the Web in general
MediaWiki - Originally designed for Wikipedia, this is the most popular and free Wiki software which can be installed and used on systems worldwide.