# Open-source wikis and knowledge bases

5 open-source wikis and knowledge bases rated against public privacy criteria.

1. [BookStack](https://privacyratings.com/wikis/bookstack/): B (80/100). Self-hosted wiki platform that organizes documentation into shelves, books, chapters and pages. Built with PHP and Laravel, with a WYSIWYG and Markdown editor, search and role-based permissions.
2. [MediaWiki](https://privacyratings.com/wikis/mediawiki/): C (65/100). Wiki software developed by the Wikimedia Foundation that runs Wikipedia. Self-hosted PHP application with page history, templates, a visual editor and a large extension ecosystem.
3. [XWiki](https://privacyratings.com/wikis/xwiki/): C (65/100). Self-hosted enterprise wiki written in Java, with structured data, scripting and an extension system for building wiki applications. Developed by XWiki SAS and its community.
4. [Wiki.js](https://privacyratings.com/wikis/wiki-js/): D (50/100). Self-hosted wiki built on Node.js, with Markdown, visual and HTML editors, Git storage sync, full-text search and many authentication options.
5. [DokuWiki](https://privacyratings.com/wikis/dokuwiki/): F (30/100). Self-hosted wiki software written in PHP that stores pages in plain text files, so it needs no database. Includes access control, authentication connectors and a large plugin collection.

Source: https://privacyratings.com/open-source/wikis/