"First of all, it is lighter on resources and offers
less functions than its GNOME counterpart, making it a very good
choice for users who don't need advanced features, and prefer speed
over those. Being the default file manager in Xfce, Thunar also
comes included in lighter distributions like Xubuntu, which is the
Xfce-based distribution of Ubuntu. The version of Thunar I used for
this review is 1.0.0, tested in GNOME 2.26.1, as they come with
Ubuntu 9.04 Jaunty Jackalope.
"I think Thunar interface couldn't be more simple than it
already is, and it will also satisfy users who like intuitive and
easy-to-use applications. Except for the menus, it has no toolbar,
but only a sidebar with the common places, like Home, Trash,
Desktop, Filesystem or Floppy drive. The rest of Thunar's main
window is occupied by the files and directories widget itself. The
side panel can be configured to show direct shortcuts, or display a
tree view of directories."