I’ve tried a few FTP clients across the years, but alays come back to FileZilla as it is easy to use and seems to manage uploads/downloads better than the other ones I have tried. I work on a few different PCs and manage over a dozen different websites.
I quickly got tired of needing to create connection details on each PC when I wanted to access a site. I did some poking around on one of the computers (the one with most connections created) and found that the settings are stored in %AppData%\FileZilla; one of the files is sitemanager.xml which holds all of the details for the created connections.
It is a simple case of copying the file from that folder on one PC to the same folder on the other PCs and I have the same connections available, without the need to manually create them.