Another vote for Syncthing here. Been using it about a year on two Macs (and occasionally a FreeBSD server / vintage machine, when I turn it on, for backup). Do

Another vote for Syncthing here. Been using it about a year on two Macs (and occasionally a FreeBSD server / vintage machine, when I turn it on, for backup). Don’t have to think about it and it keeps about 75GB of data in my ~/Sync up to date without effort. I started trying it last year as part of an effort to reduce my third-party & cloud services & effectively got rid of Dropbox. The one trickier piece of the puzzle for me was mobile device support. I use Documents.app on iPad & iPhone combined with SFTP to my machines. Two versions per machine — LAN IP access or port-forwarded WAN access, depending on where I am. All setup with SSH keys so it’s really just one tap to get into whichever home machine I choose.