Open Source Wiki software is a very active topic. Many wiki software have been popping around after Wikipedia made MediaWiki a Gorilla of this jungle. If there are many open source wiki software, a very few have the features enterprise are looking for: fine-grained security, collaboratively working on business documents, import/export of wiki pages from/to word, abilities to be integrated in corporate directory and other IS components like portals. XWiki is probably the more enterprise ready open source wiki software, and able to compete with Atlassian Confluence, the leading proprietary wiki software.
To make your mind, here is a list of the most popular open source Wiki software to collaborate in the enterprise:
Leading open source Wiki software
XWiki is one of the leading open source wiki software, especially suited for enterprise needs. XWiki offers all the features that you can find in a typical wiki, plus all the entreprise related features: import/export of business documents, fined-grained security,…. In addition, XWiki is an application wiki ideally suited for developing collaborative web applications.
TWiki is a structured open source Wiki software, typically used to run a project development space, a document management system, a knowledge base, or any other groupware tool, on an intranet or on the Internet. Web content can be created collaboratively by using just a browser. Users without programming skills can create web applications while developers can extend the functionality of the wiki with Plugins.
MediaWiki is a open source wiki software written in PHP, originally for use on Wikipedia. It is now used by several other projects of the non-profit Wikimedia Foundation and by many other wikis. Very iftne use by IT departments to implement quickly a wiki, Mediawiki lacks many of the features an enterprise needs for a enterprise wide wiki. Look at Xwiki, TWiki ou Mindtouch Core for alternative,enterprise grade, wiki software.
Foswiki is a open source wiki software, supporting the editing of web pages in an ordinary web browser, by end users. What makes Foswiki special is that it supports the embedding of active and passive macros that enhance the page content and allow end-users to build applications that store and process data in a structured manner.
Other open source Wiki software
Tiki CMS/Groupware, also known as TikiWiki, is a powerful web-based Groupware and Content Management System (CMS), using PHP, ADOdb and smarty. It can be used to create all sorts of Web applications, Sites, Portals, Intranets and Extranets. It’s developed by a large number of contributors that form the TikiWiki Community.
FlexWiki is an open source wiki software based on Microsoft .NET technologies.
PhpWiki is a open source wiki software writtent in PHP. interesting wiki features like Multiple storage backends, dynamic hyperlinking, themeable, scriptable by plugins, full authentication, ACLs and semantic wiki features.
SnipSnap is an open source weblog and wiki software written in Java.
TiddlyWiki is a single html file which has all the characteristics of a wiki – including all of the content, the functionality (including editing, saving, tagging and searching) and the style sheet. Because it’s a single file, it’s very portable – you can email it, put it on a web server or share it via a USB stick.
WikyBlog is a collaboration software that fuses the collaborative editing features of wikis with the user friendly publishing characteristics of blogs.
WikiPlex is a regular expression based open source wiki software that allows developers to integrate a wiki experience into an existing .NET application seamlessly and with little effort. WikiPlex is built and used by the CodePlex team.
JSPWiki is a feature-rich and extensible Wiki software built around the standard J2EE components (Java, servlets, JSP).
ScrewTurn Wiki is an open source wiki software that allows you to create, manage and share wikis. ScrewTurn Wiki can be extended and customized with plugins and themes. It can store data using a simple, built-in file-system provider or, if you need performance and scalability, it can use SQL Server or MySQL. If you use Active Directory, you can integrate with that too. ScrewTurn Wiki is free and open source (GPLv2), meaning that you can use and modify it without limitations. In case GPLv2 is inadequate for your needs, we also offer commercial licenses.