HedgeDoc (formerly known as CodiMD) is an open-source collaborative markdown editor. With HedgeDoc you can 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.
- Real-time collaboration
Graphs & diagrams
Easy to use permission system
https://md.byr.moe (Campus Network & IPV6)