If you have som basic Terminal ninja skills you can set up a simple syncing to Dropbox or iCloud Drive with a symbolic link. Since all settings are stored in a plain plist-file and F-Bar does not write to often this, the cloud syncing works faily well.
All settings and sites are saved in a plist-file found here ~/Library/Preferences/se.eastwest.F-Bar.plist
Prepare
Quit F-Bar
Go to preferences folder and backup
cd ~/Library/Preferences
cp se.eastwest.F-Bar.plist se.eastwest.F-Bar.plist.backup
Sync with DropBox
In this example there is already a folder called “Prefs” in the Dropbox folder
Move your preferences to DropBox
mv se.eastwest.F-Bar.plist ~/Dropbox/Prefs/
Create a symbolic link to the file to the file on Dropbox
ln -s ~/Dropbox/Prefs/se.eastwest.F-Bar.plist se.eastwest.F-Bar.plist
Sync with iCloud Drive
In this example there is already a folder called “Prefs” in the Dropbox folder
Move your preferences to iCloud Drive
mv se.eastwest.F-Bar.plist ~/Library/Mobile Documents/Prefs
Create a symbolic link to the file to the file on iCloud Drive
ln -s ~/Library/Mobile Documents/Prefs se.eastwest.F-Bar.plist
Revert
If you want to revert to old settings just remove the symbolic link
cd ~/Library/Preferences
rm se.eastwest.F-Bar.plist
mv se.eastwest.F-Bar.plist.backup se.eastwest.F-Bar.plist