CodiMD is an online collaborative text editor that uses the Markdown markup language. It is the free/libre/open community version of HackMD.
Create collaborative documents
Run a self-hosted CodiMD installation as part of a classroom software package, enabling students to collaborate on documents without surveillance-based services. In the process they will also learn Markdown, a simple and widely used markup language.
How to use it
CodiMD can be self-hosted, including with Cloudron.
- Etherpad - which is also free/libre/open but less actively developed
- Google Docs