This is Debian GNU/Linux's prepackaged version of xsok.
xsok was written by Michael Bischoff <Michael.Bischoff@gmx.net>.

The upstream source was downloaded from
ftp://ftp.io.com/pub/mirror/FreeBSD/ports/distfiles/xsok-1.02-src.tar.gz

The current Debian maintainer is Peter Samuelson <peter@p12n.org>.
Much of the packaging work was done by previous Debian maintainers
Sven Rudolph and Joel Rosdahl.

    Copyright (c) 1994 by Michael Bischoff (mbi@mo.math.nat.tu-bs.de)

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details. (The file COPYRIGHT.GNU)

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to Free Software Foundation,
    Inc., 51 Franklin St., Fifth Floor, Boston, MA 02110-1301, USA.

On Debian GNU/Linux systems, the complete text of the GNU General Public
License version 2 can be found in '/usr/share/common-licenses/GPL-2'.
