"Leaps is a command line utility and golang library for collaboratively editing your local files over HTTP, using operational transforms to ensure zero-collision synchronization across any number of editing clients." - from the github readme
Ranked in these QuestionsQuestion Ranking
Pro Zero configuration required
Just run it in the directory you wish to share.
Supports macOS, Linux and Windows. Also includes Linux ARM support.
Pro No dependencies
A single binary, with no dependencies, very simple.
Pro Low latency and bandwidth
Because all it does is synchronise the text changes made, it is much lower in latency and bandwidth usage than some of the other alternatives
Con No longer available
It is now commercial only through the SLACK application.
Con Not suitable or secure for over the internet
Designed for use on LANs.