Qt Licensing
We license Qt under the terms of the GNU Lesser General Public License (LGPL) version 2.1.
This version of Qt is appropriate for the development of Qt applications (proprietary or open source) provided you can comply with the terms and conditions contained in the GNU LGPL version 2.1. Learn more about the LGPL license here.
Additionally, we have reached an agreement with Digia, who provides Qt under the terms of a commercial licensing agreement. This version of Qt is called Qt Commercial. To find out more about Qt Commercial, please visit qt.digia.com.
This version of Qt is appropriate for the development of Qt applications (proprietary or open source) provided you can comply with the terms and conditions contained in the GNU LGPL version 2.1. Learn more about the LGPL license here.
Additionally, we have reached an agreement with Digia, who provides Qt under the terms of a commercial licensing agreement. This version of Qt is called Qt Commercial. To find out more about Qt Commercial, please visit qt.digia.com.