Although no known window manager directly supports such a feature (olvwm and
swm may come close) -- which may be equivalent to writing out a
.xinitrc or .xsession file naming the geometry and WM_COMMAND of each
application  -- there is a contributed application which does much of what
you are looking for, although it is not as complete as the SunView program
toolplaces.  Look for the application "xplaces" on an archive-server near
you.  There are several versions of this program floating around; look for a
recent vintage.  [10/90]

Some new pseudo session-managers such as HP's vuewm provide for the saving of
sessions including information on the geometry of currently-running
applications and the resource database.  [Bjxrn Stabell
(bjoerns@staff.cs.uit.no); 3/93.]

In Release 6 a new session management protocol was defined, called XSMP (see
doc/specs/SM), for telling applications when to save their internal state and
for managing user dialog during the save.  R6 contains a very simple session
manager that exercises this protocol in the workInProgress directory; look
for xsm.  R6 also added a new shell widget class to Xt to make it easier to
write applications that react to messages from a session manager.  The window
managers still have to do the work to save the window positions. [Dave
Wiggins (dpw@x.org); 5/94.]