WesWorkshop has been licensed under the GPLv3: GPLv3

Copyright (C) 2013-15 Bruno Zamengo.

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 3 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.

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

A copy of the license should be included with the program distribution. It can be read online too:

WesWorkshop makes use of third-party's software. Here follows the list of dependences and their licenses:

JGoodies Common BSD 2-Clause License
JGoodies LAF BSD 2-Clause License
Fatcow icons Creative Commons 3.0
Open Clip Art icons Unlimited Commercial Use