source wanted

[Ken Goldman]

We have a number of sites with VAXen running VMS which are linked
by DECnet or other such networks.  We also have at these sites a
number of workstations running UNIX.  We would like to use the
VAX network to transfer data among the UNIX systems.

The way I have seen this done elsewhere is to make a 'tar' tape
on one UNIX system, bring this tape over to the VAX/VMS system,
read it into one big file, directory structure and all, copy this
file to the remote VAX, write the big file onto tape, and bring
this tape over to the UNIX system.

The question: does anyone know of any software which runs under VMS
which can read a tar tape into a file and vice versa.  The one I saw
was written in VAX assembly language.

Or: any other suggestions?