Protocol information is linked from the homepage: https://github.com/calmh/syncthing/blob/master/protocol/PROTOCOL.md https://github.com/calmh/syncthing/blob/ma

Protocol information is linked from the homepage: https://github.com/calmh/syncthing/blob/master/protocol/PROTOCOL.md https://github.com/calmh/syncthing/blob/master/protocol/PROT... > Does this support delta/block-level sync for large files Yes. > Does it utilize the native OS platform APIs for detecting file modification It uses polling. Edit: inotify issue is here: https://github.com/calmh/syncthing/issues/9 https://github.com/calmh/syncthing/issues/9 (the author seems to want to implement this feature once go has a decent cross-platform file watching library)