xfm, the X file and appilcation manager, is available from
ftp.x.org:/contrib/applications and from
sunsite.unc.edu:/pub/Linux/X11/xutils/managers; version 1.3.2 was released
5/95.

Moxfm is a free OSF/Motif based file and application manager for generic Unix
systems running X11. Moxfm allows you to browse your directory tree and to
copy, move, link and delete files in an intuitive way by simple drag-and-drop
actions.  (It is based on xfm.) Sources are on
ftp://ftp.x.org/contrib/applications/ ; some Linux, HPUX and IRIX
binaries are available from http://ips105.desy.de:8765/~mai/moxfm .
See also http://sugra.desy.de/user/mai/moxfm/ .

xdtm, the X Desktop Manager, is available from ftp.x.org and avahi.inria.fr;
version 2.5.7 was released 12/95.

FileRunner is a tcl/Tk based file manager which is configurable. Sources are
available at
ftp://sunsite.unc.edu/pub/Linux/X11/xutils/managers/ .
Version 2.0 was released 9/96.

Several other packages which are not file managers but which make easy the
invocation of applications from configurable button bars are 

	"rtc" (in ftp.x.org:contrib/applications as rtc-2.0.tar.gz) 

	"bricons" (in ftp.x.org:R5contrib/ as bricons-athena-3.0.tar.Z or
	bricons-motif-3.0.tar.Z).

	"tkgoodstuff" is available from
	ftp://merv.philosophy.lsa.umich.edu/pub/ ; information is on
	http://www.umich.edu/~markcrim/tkgoodstuff/tkgoodstuff.html (version
	4.1 was released 9/96).

	"xtpanel" lets the user build a panel containing interactive objects
	such as buttons, sliders, text fields, etc., either from the command
	line or using a simple scripting language. It is available for
	anonymous ftp from hanauma.Stanford.EDU (36.51.0.16) as
	pub/X/xtpanel-3.01.tar.Z and may also be found in the alt.sources
	archives.

	"xmgoodstuff" is a simple Motif toolbar along the lines of tkgoodstuff;
	see http://stud1.tuwien.ac.at/~e8930188 for details.

Also:

IXI sells X.desktop.

Freedom software sells a desktop product.

Visix offers a desktop product called Looking Glass.

A product called G.R.E.A.T. may qualify.

The CDE environment offered by several vendors (or in earlier versions from
HP and SAIC) offers a desktop environment. According to the alt.windows.cde
FAQ, it will probably replace Looking Glass and X.desktop. See information
from the vendors, including http://www.triteal.com/ .