Outline
41kExtensible wiki for your team.
SelfHostHub lists 24 open-source Wikis projects you can host on your own server. The most-starred on GitHub are Outline (40,963 stars), Wiki.js (29,051 stars) and docmost Community Edition (22,024 stars). 10 of them document a Docker install, and 9 offer a live demo you can try first.
Replacing a paid app? See open-source alternatives to Notion.
Extensible wiki for your team.
Modern, lightweight and powerful wiki app using Git and Markdown.
Collaborative wiki and documentation software (alternative to Confluence, Notion).
Reusable non-linear personal web notebook.
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.
Knowledgebase platform that uses static Markdown files.
Modern Docs + Wiki software with built-in workflow, single binary executable, just bring MySQL/Percona.
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.
Graphical text editor used to maintain a collection of wiki pages. Each page can contain links to other pages, simple formatting and images.
Wiki system with complex functionality for simple integration and a superb interface. Store your knowledge with style: Use django models.
Simple, easy to use wiki software using markdown.
Second generation wiki that allows the user to extend its functionalities with a powerful extension-based architecture.
A fast wiki for people who think in folders, not feeds. Fast editing. Tree navigation. Markdown on disk.
A modern, feature-rich, databaseless flat-file wiki platform.
A databaseless markdown flat-file wiki engine.
Amusewiki is based on the Emacs Muse markup, remaining mostly compatible with the original implementation. It can work as a read-only site, as a moderated wiki, or as a fully open wiki or even as a private site.
Wiki CMS Groupware with the most built-in features.
Lightweight, mutli-user, flat-file-database Wiki engine. Create pages quickly and edit them in your Web browser using Mardown/HTML/CSS/JS. The main difference with other wiki is that you are encouraged to customize each page style individually.
WackoWiki is a light and easy to install multilingual Wiki-engine.
Organize and store information. Stores documentation in a book like fashion.
A lightning fast and infinitely extensible tool for creating personal non-linear notebooks, databases, and wikis that is entirely self-contained, runs in your browser, and is only 58 kilobytes in size.
Wiki software package that powers Wikipedia and all other Wikimedia projects, serving hundreds of millions of users each month.
Wiki-based system for collaborative creation and maintenance of websites.
Wiki, simple to use and install.
By GitHub stars, the top projects in this category are Outline (40,963 stars), Wiki.js (29,051 stars) and docmost Community Edition (22,024 stars).
24 projects are currently listed in the Wikis category on SelfHostHub.
The most common licences in this category are AGPL-3.0 (5), GPL-2.0 (5) and MIT (5).
10 of the 24 projects list Docker as a supported platform. Check each project's documentation for the exact install steps.