We are building web applications since the mid-90s with Python. Historically, we have used a
As part of our professional publishing strategy we will bring real collaborative editing to Plone.
We started with the integration of Smashdocs - "a web-based intelligent word processing platform".
Smashdocs is about collaborative editing in the browser with decent support for collaborative and concurrent authoring, tracking changes, discuss and comment on content, review and approve/reject content changes. Smashdocs support different roles: readers, commentators, editors and approvers.
Here is a quick&dirty screencast showing the first cut of the integration with Plone 5.