Are Syncthing or Tarsnap US-based? No. And Syncthing is just a tool that does multi-way sync across devices you own. If a company wanted to replace Dropbox wit

Are Syncthing or Tarsnap US-based? No. And Syncthing is just a tool that does multi-way sync across devices you own. If a company wanted to replace Dropbox with Syncthing, they would have to run one or more servers to provide the "always on" feature that their employees' "sometimes on" laptops sync to.