Hedgedoc
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HedgeDoc (formerly known as CodiMD) is an open-source, web-based, self-hosted, collaborative markdown editor. You can use it to easily collaborate on notes, graphs and even presentations in real-time. All you need to do is to share your note-link to your co-workers and they’re ready to go.

HedgeDoc (anciennement CodiMD) is an open-source, web-based, collaborative markdown editor designed for real-time cooperation and documentation.

The main features of this tool include:

  • Real-Time Collaborative Editing: Multiple users can work on the same document simultaneously, with changes appearing instantly for everyone.

  • Markdown-Powered: It uses standard Markdown for text formatting, allowing for quick and structured content creation without complex menus.

  • Flexible Permission Management: Users can set notes to be private, protected (readable by all, editable by signed-in users), or public.

  • Rich Media Support: Beyond text, it supports the embedding of images, videos, and even complex diagrams using tools like Mermaid or Graphviz.

  • Revision History: The platform tracks changes over time, allowing users to view previous versions of a document and see who contributed what.

  • Self-Hostable & Privacy-Focused: It is designed to be easily deployed on your own infrastructure (via Docker or manual install), ensuring full control over your data.

  • Publish Mode: Notes can be instantly transformed into a clean, read-only view or even a slide presentation.