I just use syncthing. Regarding keeping configurations in sync, I have a "template" vault where I install and test all my plugins first and have a script that c

I just use syncthing. Regarding keeping configurations in sync, I have a "template" vault where I install and test all my plugins first and have a script that copies the entire .obsidian folder (minus some specific files) from the template vault to all my other vaults which results in syncing of all plugins/settings. I did buy their Catalyst license though since I wanted to pay back something for all the good work they did.