sK1 is an open source vector graphics editor similar to CorelDRAW(tm), 
Adobe (R) Illustrator(tm), or Adobe (R)Freehand(tm). 
First of all sK1 is oriented for prepress industry.
sK1 Team (http://sk1project.org), copyright (C) 2003-2007 by Igor E. Novikov.

sK1 uses Sketch engine:
Copyright (C) 1998, 1999, 2000, 2002, 2003 by Bernhard Herzog

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

Please note that some code portions are licensed under GNU General Public
License v2.0.

This library 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
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

GPL and LGPL license agreement you can find in "GNU_GPL_v2" and "GNU_LGPL_v2" files.