With Syncthing sync data is decentralised between different computers. For this purpose, between the respective devices, a direct connection is established. Unlike Cloud solutions, the files are not on an external Server, is centrally managed. By an additional encryption means that you get a secure way of data exchange.
To link with other computers to produce, to send an automatically-generated ID, or use a QR-Code. Then, determine which directories you want to share and revoke users with necessary access. In addition, you define for each Register, the write permissions and read permissions. This way, you have full control over your Files.
You can free download Syncthing and safe install the latest trial or new full version for Windows 10 (x32, 64 bit) from the official site.