I also am a happy syncthing user. I have one “server” that contains all my synced folders, is always online and gets backed up to the cloud. Every other device

I also am a happy syncthing user. I have one “server” that contains all my synced folders, is always online and gets backed up to the cloud. Every other device syncs a subset of those folders using syncthing. It is fast and reliable. I had to set up some stignore files to exclude platform-specific files like node_modules, but other than that it has been smooth sailing.