Xfce4 GVfs Mount is a small application that is meant to mount remote file systems only. It was initially written because Thunar 1.0 is lacking that feature. The application is composed of a daemon, a mount dialog, and a panel plugin.
The daemon is started when needed and does the real mount and unmount operations. The mount dialog is a graphical dialog with default templates for mounting Samba shares and SFTP remote file systems, but has also a generic form where the location can be freely typed. The panel plugin is the quick way to mount new remote file systems and open or unmount existing remote file systems only (attached volumes aren't displayed as they are already handled with Thunar).