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BookStack is a free and open-source, self-hosted, easy-to-use platform for documenting, organizing and storing information. BookStack is written in PHP, on-top of the Laravel Framework and can be hosted on most web hosting platforms, VPSs and cloud instances. The software is configurable and allow you to setup BookStack for your particular user case. It allows you to change, the name, logo, theme and registration options. It also provides a page editor with a simple WYSIWYG interface that can be used to edit content by anyone. BookStack is developed as a truly free and open software and is released under the MIT license.

SlimWiki is a web-based wiki tool that can help teams documents their projects. It provides simple, versatile and powerful features out-of-the-box, that allow companies to spend more time on business related tasks and less time documenting their creations. SlimWiki is designed with a mobile-first approach and provides simple drag/drop features for placement and layout of images and files that helps you produce rich and easily consumable content.

Docusaurus makes it easy to maintain open source documentation websites. With Docusaurus you can wriet docummentation and blog posts using Markdown and save time when doing so. Docusaurs automatically publish your files as static html files ready to serve on the web.

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ReadTheDocs is a huge resource that millions of developers rely on for software documentation. With ReadtheDocs it simple to create documentation for your development project that will be hosted free, forever. ReadTheDocs integrates with your favorite version control system, be it Git, Mercurial, Bazaar, or Subversion. Allowing you to push documentation along with project updates through your CI/CD pipeline.

SkyDocs is a lightweight static documentation builder with MarkDown.