Document Collaboration in Real-Time with SubEthaEdit
performancing.com
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
Creating and editing documents has, understandably, been a fairly lonely task for bloggers. Fortunately, SubEthaEdit by The Coding Monkeys changes all that by giving users the power to collaborate instantaneously. Multiple people can create and edit content in real-time, and beyond being fun, it is extremely useful as well.