A Wiki is a website which visitors can modify. Wikis are composed of web pages you can write on, enabling fast and easy collaboration

Why Wiki?

This is very commonly asked and answered question. But here is the few uses which I feel about a Wiki.

Educational: It can be used as instrumental tool for building knowledge management system. Wiki is also been used as Text books in few educational institutions.

Collaboration: It allows the project team to collaborate on any specific task / idea.

Documentation: It can be used for the documentation purpose of any project. Draft version of document can be developed greatly using Wiki features.

Personal: It can be used for personal note taking purpose and book marking.

Top 5 -

Here is the list of popular open source Wiki engines. This list is not complied in chronological order according to their popularity.

MediaWiki

MediaWiki

MediaWiki is most popular and holds the crown amongst the list. MediaWiki free web based software Wiki engine that was originally written for Wikipedia. MediaWiki is been adopted by several corporate and institutions as their internal knowledge management system. MediaWiki is written in PHP language and supports both MySQL and PostgreSQL RDBMS.

TWiki

TWiki

TWiki is a flexible, powerful, secure, yet simple web-based collaboration platform. TWiki can be used to run a project development space, a document management system, a knowledge base or any other groupware tool on either an intranet or on the Internet. This Wiki is been mostly used by lot of enterprise including Yahoo and others. TWiki is written in PERL.

PmWiki

PmWikiPmWiki is a free wiki-based system for collaborative creation and maintenance of websites. PmWiki pages look and act like normal web pages, except they can be edited or new pages can be added. Page editing can be left open to the public or restricted to small groups of authors. PmWiki works over text file and is written in PHP.

DokuWiki

DokuWikiDokuWiki is simple and lightweight Wiki engine. The administration option is very simple and comes with one click installation. DokuWiki is highly customizable with your current website theme. DokuWiki is written in PHP and works on small text file. DokuWiki is my personal favorite since it keeps everything simple!

MoinMoinWiki

MoinMoinWikiMoinMoinWiki is a web application for making large database of knowledge basing. It produces nice structured information with feature of expansion information in cooperation manner with appropriate use it is power full content database. Alternatively, desktop edition of the Wiki is also available. It uses flat file for storing the information.

Here is the list of few other open source Wiki engines which is worth giving a try.

Do you see another use of Wiki? Have you used any of the mentioned Wiki engines? Share your experience.