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GNU LESSER GENERAL PUBLIC LICENSE The Qt Toolkit is Copyright (C) 2016 The Qt Company Ltd. Contact: http://www.qt.io/licensing/ You may use, distribute and copy the Qt Toolkit under the terms of GNU Lesser General Public License version 2.1, which is displayed below. ------------------------------------------------------------------------- GNU LESSER GENERAL PUBLIC LICENSE Version 2.1, February 1999 Copyright (C) 1991, 1999 Free Software Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. [This is the first released version of the Lesser GPL. It also counts as the successor of the GNU Library Public License, version 2, hence the version number 2.1.] Preamble The licenses for most software are designed to take away your freedom to share and change it. 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