GVFS is the virtual file system for the Gnome Desktop, http://en.wikipedia.org/wiki/GVFS. Remote files on GVFS are mounted locally through FUSE and TRAMP uses this locally mounted directory internally.
Emacs uses the D-Bus mechanism to communicate with GVFS. Emacs must have the message bus system, D-Bus integration active, see (dbus)D-Bus.
This method is for connecting to remote hosts with the Apple Filing Protocol for accessing files on Mac OS X volumes. TRAMP access syntax requires a leading volume (share) name, for example: /afp:user@host:/volume.
dav method provides access to WebDAV files and directories based on standard protocols, such as HTTP. davs does the same but with SSL encryption. Both methods support the port numbers.
OBEX is an FTP-like access protocol for cell phones and similar simple devices. TRAMP supports OBEX over Bluetooth.
This method uses
sftp in order to securely access remote
sftp is a more secure option for connecting to hosts
that for security reasons refuse
synce method allows connecting to Windows Mobile devices. It uses GVFS for mounting remote files and directories via FUSE and requires the SYNCE-GVFS plugin.
This custom option is a list of external methods for GVFS. By default, this list includes afp, dav, davs, obex, sftp and synce. Other methods to include are: ftp and smb.