Open Source software often provides useful tools and functions that advance the state of the art for all software developers as well as software users. Several Duxbury products include Open Source software from a third party.
Generally speaking, Open Source software is available on the Internet in source code form, where any developer or user can obtain it and compile it into new works subject to the restrictions of the original authors and contributors.
Most Duxbury Windows and MacOS products use the wxWidgets Cross-Platform GUI Libraries to implement the user interface and provide a number of low-level functions. (See https://www.wxwidgets.org for more information on wxWidgets.)
All other third-party open source software used in Duxbury products is listed explicitly in this topic and the related subtopics. Note that components shipped with a Duxbury product and not listed below should be understood to be subject to the copying restrictions outlined in the Duxbury End-User License Agreement (EULA).
The lists below do not include information about Open Source software that may be included in the operating system software on which the Duxbury application runs. The manufacturer of the operating system should post information about its use of Open Source software.
Open Source Components by Duxbury Product
Additional Open Source software components included with each Duxbury product appear in the sections below.
DBT includes several additional Open Source components on the Windows platform only. These are used to support importing various document file formats.
For copyright and restrictions, see Licence for libxml2 and Supplemental Licence for libxml2.
For copyright and restrictions, see Licence for libxslt except libexslt.
For copyright and restrictions, see Licence for libexslt.
NimPro includes two data files that are used to interpret the symbols that may appear in DAISY/NIMAS input documents that include MathML.
(C) International Organization for Standardization 1991
See comments within mathml2.ent for license terms and further information.
Copyright 1998 - 2011 W3C
See comments within htmlmathml-f.ent for license terms and further information.
Certain wxWidgets libraries used by NimPro are in whole or in part contributed by third parties to WX and have their own copyrights. Duxbury acknowledges the copyrights of these parties in these libraries (components).
- wxTIFF Library
For copyright information, see wxTIFF (Tagged Image File Format) Library
- wxRegEx Library
For copyright information, see wxRegEx (Regular Expressions) Library
No additional Open Source material is used in Perky Duck.
QuickTac for MacOS includes additional copyrighted Open Source software to implement curve drawing.
Copyright (c) 2016 Marcel Steinbeck
For license and further information, see License for TinySpline.