HedgeDoc

HedgeDoc is an open source, web-based Markdown editor that you host on your own server. Several people can edit the same note at once in real time. It was formerly known as CodiMD.

HedgeDoc lets you write notes in Markdown and share them by link. Permissions are set for each note with a simple dropdown, and revisions keep track of changes so you can go back to an older version. It can also build presentations with reveal.js and draw graphs and diagrams inside a note.

• Real-time collaboration on notes
• Presentation mode with slides
• Revision history with restore
• Per-note permission settings
• Graphs and diagrams inside Markdown

HedgeDoc suits teams and communities that want their notes kept on their own server. It is a good match for people who are comfortable running a small Node.js application, and for groups who want control over where their written material is stored.

HedgeDoc is open source under the AGPL 3.0 license. You install it yourself with a ready bundle or a Docker image, so hosting costs depend on the server you choose. The public demo is free to try, but the project notes that its reliability is not guaranteed, so use your own instance for daily work.