Well, yep. For now the positive differences are
- better speed transfers (up to
x7speed up on my setup). - different UI (including unique features like see in realtime tree-like structure of remote/local folders).
- Windows XP support
- it targeted for long-awaited "selective sync" mega-feature (asked for many years by syncthing users; but it is out of scope of syncthing business, so, it will unlikely be developed). I plan to do it after 1-2 releases (after implementing "ignoring local files" feature).


Ha-ha! Most of people thins that syncspirit UI is terrible :)