List of Top Free Open Source & Self Hosted Application for Wikis

A wiki is a publication collaboratively edited and managed by its own audience directly using a web browser.

BookStack – BookStack is a simple, self-hosted, easy-to-use platform for organizing and storing information. It allows for documentation to be stored in a book like fashion. MIT PHP
Cowyo – Cowyo is a feature-rich wiki for minimalists. MIT Go
django-wiki – Wiki system with complex functionality for simple integration and a superb interface. Store your knowledge with style: Use django models. GPL-3.0 Python
Documize – Modern Docs + Wiki software with built-in workflow, single binary executable, just bring MySQL/Percona. AGPL-3.0 Go
Dokuwiki – Easy to use, lightweight, standards-compliant wiki engine with a simple syntax allowing reading the data outside the wiki. All data is stored in plain text files, therefore no database is required. GPL-2.0 PHP
Gitit – Wiki program that stores pages and uploaded files in a git repository, which can then be modified using the VCS command line tools or the wiki’s web interface. GPL-2.0 Haskell
Gollum – Simple, Git-powered wiki with a sweet API and local frontend. MIT Ruby
Instiki – Instiki is a wiki clone so pretty and easy to set up, you’ll wonder if it’s really a wiki. Runs on Rails and focuses on portability and stability. Ruby Ruby
Mediawiki – MediaWiki is a free and open-source wiki software package written in PHP. It serves as the platform for Wikipedia and the other Wikimedia projects, used by hundreds of millions of people each month. GPL-2.0 PHP
Mycorrhiza Wiki – Filesystem and git-based wiki engine written in Go using Mycomarkup as its primary markup language. AGPL-3.0 Go
Outline ⚠ – An open, extensible, wiki for your team. BSD-3-Clause Nodejs
Pepperminty Wiki – Complete markdown-powered wiki contained in a single PHP file. MPL-2.0 PHP
PineDocs – Simple, fast, customizable and lightweight site for browsing files. GPL-3.0 PHP
PmWiki – Wiki-based system for collaborative creation and maintenance of websites. GPL-3.0 PHP
PukiWiki – PukiWiki is a free, simple, open-source wiki management system. Minimalistic and simple design with many tools for collaborative work. Created in Japanese, so translator needed. GPL-2.0 PHP
Raneto – Raneto is an open source Knowledgebase platform that uses static Markdown files to power your Knowledgebase. MIT Nodejs
TiddlyWiki – Reusable non-linear personal web notebook. BSD-3-Clause Nodejs
Tiki – Wiki CMS Groupware with the most built-in features. LGPL-2.1 PHP
TWiki – 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. GPL-2.0 Perl
WackoWiki – WackoWiki is a light and easy to install multilingual Wiki-engine. BSD-3-Clause PHP
Wiki.js – Modern, lightweight and powerful wiki app using Git and Markdown. AGPL-3.0 Nodejs
wiki – Simple Markdown based wiki engine. MIT Go
WiKiss – Wiki, simple to use and install. GPL-2.0 PHP
Wikmd – Modern and simple file based wiki that uses Markdown and Git. MIT Python
XWiki – Second generation wiki that allows the user to extend its functionalities with a powerful extension-based architecture. LGPL-2.1 Java
Zim – Graphical text editor used to maintain a collection of wiki pages. Each page can contain links to other pages, simple formatting and images. GPL-2.0 Python