Free wiki software

MediaWiki is a free and open-source wiki software system originally developed by Magnus Manske and released for use on Wikipedia on January 25, 2002, and further enhanced by Lee Daniel Crocker, after which development has been coordinated by the Wikimedia Foundation. It powers several wiki hosting websites across the Internet, as well as most websites hosted by the Wikimedia Foundation, including Wikipedia, Wiktionary, Wikimedia Commons, Wikiquote, Meta-Wiki and Wikidata, which define a large part of the set requirements for the software. Besides its usage on Wikimedia sites, MediaWiki has bee

Phabricator is a free and open source suite of web-based development collaboration tools.

The WikiWikiWeb is the first wiki, or user-editable website. It was launched on 25 March 1995 by programmer Ward Cunningham and has been a read-only archive since 2015. The name WikiWikiWeb originally also applied to the wiki software that operated the website, which was later renamed to "WikiBase".

DokuWiki is an open source wiki application licensed under GPLv2 and written in the PHP programming language. It works on plain text files and thus does not need a database. Its syntax is similar to the one used by MediaWiki. It is often recommended as a more lightweight, easier to customize alternative to MediaWiki. The 'Doku' in DokuWiki is short for Dokumentation which in German means documentation.

UseModWiki is a wiki software written in Perl and licensed under the GNU General Public License. Pages in UseModWiki are stored in ordinary files, not in a relational database. Wikipedias in English and many other languages were powered by UseModWiki until switching to MediaWiki.

270px|thumb|right|A standard tiddler edit dialogue box on TiddlyWiki 5.2.0

Redmine is a free and open source, web-based project management and issue tracking tool. It allows users to manage multiple projects and associated subprojects. It features per project wikis and forums, time tracking, and flexible, role-based access control. It includes a calendar and Gantt charts to aid visual representation of projects and their deadlines. Redmine integrates with various version control systems and includes a repository browser and diff viewer.

TWiki is a Perl-based structured wiki application, typically used to run a collaboration platform, knowledge or document management system, a knowledge base, or team portal. Users can create wiki pages using the TWiki Markup Language, and developers can extend wiki application functionality with plugins.

MoinMoin is a wiki engine implemented in Python, initially based on the PikiPiki wiki engine. Its name is a play on the North German greeting Moin, repeated as in WikiWiki. The MoinMoin code is licensed under the GNU General Public License v2, or (at the user's option) any later version (except some 3rd party modules that are licensed under other Free Software licenses compatible with the GPL).

Content management system, free and open-source wiki software

PmWiki is a wiki-based content management system designed for a collaborative creation and maintenance of websites.

XWiki is a free and open source wiki software platform written in Java with a design emphasis on extensibility. XWiki is an enterprise wiki. It includes WYSIWYG editing, OpenDocument-based document import/export, annotations and tagging, and advanced permissions management.

Trac is an open-source, web-based project management and bug tracking system. It has been adopted by a variety of organizations for use as a bug tracking system for both free and open-source software and proprietary projects and products. Trac integrates with major version control systems including ("out of the box") Subversion and Git. Trac is used, among others, by Django, FFmpeg, WebKit, 0 A.D., and WordPress.

distributed version control system, bug tracking system and wiki server

GTK-based desktop wiki software written in Python

BlueSpice is free wiki software based on the MediaWiki engine and licensed with the GNU General Public License. It is especially developed for businesses as an enterprise wiki distribution for MediaWiki and used in over 150 countries.

PhpWiki is a web-based wiki software application. It began as a clone of WikiWikiWeb and was the first wiki written in PHP. PhpWiki has been used to edit and format paper books for publication.

PukiWiki is wiki software written in PHP, and is widely used by Japanese wikis. It was forked from , originally developed by . Since version 1.4, PukiWiki Development Team became the developer of the software.

Wiki.js is a wiki engine running on Node.js and written in JavaScript. It is free software released under the Affero GNU General Public License. It is available as a self-hosted solution or using "single-click" install on the DigitalOcean marketplace.

ikiwiki is a free and open-source wiki application, designed by Joey Hess. It is licensed under the terms of the GNU General Public License, version 2 or later. ikiwiki is written in Perl, although external plugins can be implemented in any language.