Syncthing is a tool to synchronize multiple folders between different computers with same or different operating systems. It is
- open source,
- the synchronized data is sent peer-to-peer, the data is not transferred across a centralized server,
- the setup of the tool is a breeze, you will be surprised how quick and smooth,
- the syncing itself is quick and flawless,
- security is one of the primary project goals.
👌 The tool is good, you should give it a try!