How to organize file updates via lan?

Question

ruby

I’ll make a reservation right away, I’m a tester, not a programmer, and perhaps the question is stupid, but I can’t find an elegant solution.
The essence of the problem:
There are automation scripts that are regularly (about 3 times a day) updated.
Required:
Track changes and automatically update changed and added files on three test computers (winXP). In general, ideally, I would like something like Capistrano or Mina Deploy, but without SSH: so that I can push the file update when the script is changed and the recipient computer downloaded only the updated file.
I tried to implement it by getting a list of files, counting the MD5 hashes of each file, comparing the hashes with the hashes of the local file, and those files that differ were copied over Lan. It turns out slow and cumbersome, well, it happened all the time, and not so that I remotely pushed the update.
Tell me, please, maybe there are some other deployment tools implemented in ruby ​​and working without SSH, or if there are none, in which direction to look in order to make such a tool yourself.

Answer 1

You can use rsync or BitTorrent Sync

Answer 2

goodsync

Answer 3

https://www.aerofs.com/ there just 3 computers can be connected for free