we did this in the late 2000s when schools banned chat programs. Just working in Google docs teach.

should also look into conduit or one of its siblings, normal synapse is a dog to run

Zillow is just the first boss, you have to break open the MLS system

The way I’ve been using it for a few years is that most of my machines can see each other and I have a shared folder and versioning setup. As I add things they move between the different machines and once an additional machine has it it is available to the others until everything is in sync

You can definitely do chain topologies which are useful for certain things with a single source of truth

As a note, I believe that syncthing will actually scale up with more nodes as they will all share with each other if they know each other. If you’re doing this 1 to many then this is not the case of course.