Prefered:
- TreeCopy (https://www.portablefreeware.com/?id=1027)
- Miroirs (DotNET; http://www.scanialabs.com/Products/Miroirs/Miroirs.aspx)
- xcopy (CLI: '> xcopy /t /e [source_dir_root] [target_dir_root]')
- xcopy Frontend (https://www.portablefreeware.com/?id=2591)
- FreeCommander (https://www.portablefreeware.com/?id=291)
- Robocopy (https://en.wikipedia.org/wiki/Robocopy)
see also Easy RoboCopy, viewtopic.php?t=4196; faRoboGUI, viewtopic.php?t=7650; strarc, viewtopic.php?t=22311; and CopyMastro, viewtopic.php?t=23265.
Copying Directory Structures without Files
@ cects.com /copying-directory-structures-without-files/
How to copy a directory structure without copying files?
@ superuser.com/questions/530128/
BTW, TreeComp (viewtopic.php?t=7396) might also be handy in similar situations.
folder dir structure