Many thanks to the authors of the 3rd party code used in Imposition Wizard for Acrobat. Here is the list in the alphabetical order.
FreeType is a freely available software library to render fonts. Licensed under the BSD-like FreeType license https://www.freetype.org/index.html
PoDoFo is a library to work with the PDF file format Licensed under the LGPL http://podofo.sourceforge.net/
Copyright (c) 2010, 2011 Marti Maria Saguer. All rights reserved. Little CMS engine is provided free of charge under MIT LICENSE http://www.littlecms.com/
Copyright (c) 2017 PDFium Authors. All rights reserved. Use of this source code is governed by a BSD-style license. https://pdfium.goog
Protocol Buffers - Google's data interchange format Copyright 2008 Google Inc. http://code.google.com/apis/protocolbuffers/
The Qt GUI Toolkit is Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). Contact: Nokia Corporation (firstname.lastname@example.org) Qt is available under the LGPL. http://qt-project.org/doc/qt-4.8/lgpl.html