This is a port of 'lc' (List files in categories and columns) from MWC (Mark Williams Company) Coherent UNIX.
You can find the original source tarball here: http://www.nesssoftware.com/home/mwc/source.php
The original source file is COHERENT/romana/relic/d/bin/lc.c in the archive.
The original manual page:
I added support of symlinks (-l command-line option).
Released with the original LICENSE.