HedgeDoc is a real-time, multi-platform collaborative markdown note editor. This means that you can write notes with other people on your desktop, tablet or even on the phone. You can sign-in via multiple auth providers like Facebook, Twitter, GitHub and many more on the homepage.
MkDocs is a static site generator that’s geared towards project documentation. With the Material theme, it provides a sleek, responsive, and user-friendly interface for your documentation projects.
This guide contains documentation for installing and configuring the Outline knowledge base in a variety of environments. There is a separate guide on how to use Outline.