pydun.py はMIT Licenseです。要約すると、自由に使っていいですが無保証です。

ライセンス本文
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Copyright (c) 2013-2020 WATAHIKI Hiroyuki

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
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pydun.exeは以下のソフトウェアを改変せずに使用しています。

Python 3.8.1
Copyright 2001-2019, Python Software Foundation.
https://www.python.org/
License: PSF (LICENSE_Python.txt)

Qt for Python(PySide2) 5.14.1
Author: Qt for Python Team
https://wiki.qt.io/Qt_for_Python
License: LGPL version 3.0 (LICENSE_PySide2.txt)

PyYAML 5.3.1
Author: Ingy döt Net, Kirill Simonov
https://pyyaml.org/
License: MIT (LICENSE_PyYAML.txt)

また、pydun.exeの実行ファイル作成には以下のソフトウェアを使用しています。

pyinstaller v3.6
http://www.pyinstaller.org/


インストーラーには、以下のソフトウェアを使用しています。

EXEPress 6 Lite
http://www.webtech.co.jp/exepress/
