HedgeDoc

HedgeDoc is an open-source, web-based, self-hosted, collaborative markdown editor. It allows users to easily collaborate on notes, graphs, and presentations in real-time by simply sharing a note-link. Features include web-based operation, self-hosted data control, real-time collaboration, presentation mode, graphs & diagrams support, easy to use permission system, revisions tracking, and low system requirements. HedgeDoc is community-driven and licensed under AGPL 3.0, designed to make collaboration easy and efficient.