What is the easiest client for file synchronization?

Question

Software and Internet Services

The bottom line is very simple, I work with the same program on two different computers, the program stores data in a file, it’s reluctant to manually drag the file back and forth every time, you need to set up fully automatic synchronization. There is, of course, Yandex disk, Google disk, dropbox - but these are mastodons that devour the processor only on the way, and the machines are extremely, extremely weak and very busy, every second of processor time counts. Therefore, you need the most lightweight client to synchronize files between computers. There is a server with Linux, if necessary, you can use it somehow. By the way, there are only a few files, and in total they literally take a couple of megabytes.

Answer 1

After a long search, I found where I did not expect at all - a cloud client from mail.ru. Given the past experience with the satellite and amigo, I could not even imagine that they still know how to use suitable software.

Answer 2

Git, in addition to solving your problem, will give you a whole ocean of new possibilities.

Answer 3

rsync
But if possible - use VCS - Git, SVN, Mercurial - thousands of them...