Now you can synchronize files across multiple devices using the Syncthing program. Here is a lightweight file synchronization system, and it's worth noting that there's no need to pay for its usage, no requirement for an external server, and it operates swiftly. The application is available for Linux, MacOS, Windows, and several BSD variants. On the official website, you'll find user-friendly graphical interfaces for everything mentioned above. For Linux, there are packages available for most distributions, and those familiar with it can quickly handle the installation.

When you launch Syncthing for the first time, a web browser opens to configure the daemon. On the first machine, you won't need to configure much; you can familiarize yourself with the user interface in the meantime. The most important thing to notice is the system identifier in the 'Actions' menu in the top right corner. After configuring the first machine, repeat the installation on the second machine. In the user interface, at the bottom right, there will be a button labeled 'Add Remote Device.' Click the button, and you'll be presented with fields to input the device identifier and name. Copy and paste the device identifier from the first computer and click 'Save.'

You can share as many directories as you want, which is very convenient