Etherpad is an online collaborative web-based application that allows multiple users to work together in real-time. It provides a real-time editor that can be used to create and edit text documents, as well as view and comment on changes made by other users. Etherpad also allows users to share documents with their friends or colleagues, and to collaborate on projects. It is a great tool for writers, editors, and researchers who need to collaborate on a project. Etherpad is also useful for recording and tracking changes in a document, as it allows users to track each individual change that has been made. Additionally, Etherpad can be used to create and share notes with colleagues, which can be edited in real-time.
As mentioned in the name, it is an operating system, but a real set of solutions would be more like Yunohost and Cloudron.
Discontinued site / service not accessible.
Markdown support and live preview, but missing author's colors