Syncthing is an open source project which allows you to create a peer to peer syncing network for files. This all works with relay servers meaning it can work behind firewalls and without setting up DDNS. This tutorial goes over how to setup Syncthing between a RaspberryPi and a Mac. Hire Me! https://www.spacerex.co/hire-me/ Get better performance with SSD instead: https://geni.us/YPWxea My go to flash drive: https://geni.us/CEfu RaspberryPi 4: https://geni.us/p7AT2 Cooling Case for the Pi (Better performance): https://geni.us/l61B *These are Amazon affiliate links, which means that if you purchase a product through one of them, I will receive a small commission (at no additional cost to you). Thank you for supporting my channel!