GVFS is a replacement for GnomeVFS, the GNOME Virtual File System.

GVFS consists of two parts: a shared library which is loaded by
applications supporting GIO and GVFS itself, a collection of daemons
which communicate with each other and the GIO module over D-Bus. This
moves the virtual file systems out of client processes, contrary to
GnomeVFS, but somewhat similar to KIO.