More to be added here, but the general idea is an Emacs setup for writing, especially collaborative writing (at least over the LAN). Clone this to a (brand new: don’t overwrite your own Emacs config) location: git clone https://gitlab.com/emacsomancer/collaborative-writing-environment-emacs.git ~/.emacs.d
The first time it’s launched, it will tangle you a new config (you may want to go to /.emacs.d/init.org and edit the configuration appropriately, e.g. putting in your git username and email [if you use git; otherwise ignore!]).
I set this up on a Raspberry Pi (with Emacs installed to it), and then connect in from other machines with a script (included as a template here as launcher.sh). You could make a launcher button on your machine and have it run the launcher.sh script. (The script will either connect to the running Emacs daemon, or else launch a new Emacs daemon and then connect to it.)
Each person gets a different colour to indicate the part of the file they’re editing.
Includes: org-mode, fountain-mode.
(A literate configuration is used as well: make changes in init.org tangle your config (i.e. generate init.el and init.elc) with C-u C-x C-s.)