cross-platform: Syncthing works on Linux, Mac OS X, Windows, FreeBSD and Solaris.On the PC app UI, click on Add a folder and select the folder you would like to sync with your phone. synchronize as many folders as you need with different people Syncing Files from PC to Mobile or PC to PC.In mobile version you will also have to specify your name after which you will be able to fully utilize. In the opened window, enter a Secret Key that someone shared with you or generate a new one, and then choose or create a folder you would like to sync. Presently there are app versions for Android and iOS. Unlike cloud sync tools such as Dropbox, Syncthing transfers the files directly between nodes (other computers on which you've installed Syncthing) which has several advantages: the files don't end up on some cloud server, the transfer speed doesn't depend on third-party servers and also, there are no space restrictions (except, obviously, the HDD space available for those nodes). To add a folder to BitTorrent Sync, click on the +’ button (Mac) or Add a Sync Folder button (Windows) at the bottom of the Folders tab.