Is There a MacDraw-like package for the Unix PC?

[Bruce McKee]

I would like to get a drawing package for the UNIX PC.  Preferably one that
resembles MacDraw, where lines/boxes/etc. are considered objects, rather than
bitmaps.  Output to an Epson printer and Postscript would be especially desirable.  I need something that produces diagrams and view-graphs. Anyone seen something like this?  I will summarize responses to the net.

-Bruce McKee
 Villanova University
 (215)-531-1618