I have been using XFCE via Xubuntu for quite some time now and one of the things I’ve found really annoying is the lack of integration of Dropbox in Thunar. It’s simple to install Dropbox itself on any version of Ubuntu, but unlike many of the other file managers there is no package in the standard repositories for tying Dropbox to Thunar . The following will install Dropbox and the integration.
Install Dropbox if you haven’t already:
sudo apt-get install nautilus-dropbox
sudo add-apt-repository ppa:xubuntu-dev/extras
sudo apt-get update
sudo apt-get install thunar-dropbox-plugin
Close all Thunar windows if you have any open, reload them, and your right click menu should now have the options to Share Dropbox Link, View on Dropbox.com, and View Previous Versions.