Free, open-source alternatives to Confluence
Atlassian's team wiki. 7 apps you can run yourself instead of Confluence, sorted by how well they replace it. Each one is open source, so your data stays with you.
BookStackBest match
Organize and store information. Stores documentation in a book like fashion.
docmost Community Edition
Collaborative wiki and documentation software (alternative to Confluence, Notion).
Outline
Extensible wiki for your team.
XWiki
Second generation wiki that allows the user to extend its functionalities with a powerful extension-based architecture.
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.
Mediawiki
Wiki software package that powers Wikipedia and all other Wikimedia projects, serving hundreds of millions of users each month.
Side by side
Why replace Confluence?
Confluence works, but your data lives in someone else's account, the price can change at any time, and features can disappear. An open-source app you run yourself is yours: you choose where it runs, who can see the data, and when to update.
Questions
What is the best free alternative to Confluence?
BookStack is the closest open-source replacement for Confluence in our list. Wiki.js and docmost Community Edition are worth a look too, depending on what you need.
Can I self-host an alternative to Confluence?
Yes. All 7 apps on this page are open source and can run on your own server, usually with Docker, or on a managed host that installs them for you.