I often use the web service Kobra.io, in which we can edit a specific file with some people together at the same time.

Is there such a package on Emacs?

I'd like to edit a specific lisp code at the same time with some people.

If I change some parts in the code, the other people can see the change at the same time.

Could you tell me how to implement this function?

I'd appreciate your help.


There's rudel, available on GNU ELPA, which intends to do that (it supports various protocols of communication between the various Emacs sessions).

  • I used package-install to install the package, but it doesn't work on my Macbook's Emacs 25.093. When I start the rudel, the error happend as follows: slot-value: eieio-oref called on a class: rudel-backend-factory – Hiroki Nov 26 '16 at 13:31
  • I suggest you M-x report-emacs-bug and we'll take it from there. – Stefan Nov 26 '16 at 14:48
  • 1
    This was probably Bug#23996, which has been fixed by now. – npostavs Jan 25 '17 at 17:25

There is floobits. It works OK.

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