Dual Licensing model

libQGLViewer uses a Dual License business model for its software development library and offers licenses for two distinct purposes - commercial and open source development.

Quid Pro Quo

Dual Licensing is based on the principle of Quid Pro Quo - "something for something". In return for the advantages you realize from using libQGLViewer to create your application, we require that you do one of the following:

Why does libQGLViewer use dual licensing?

Since its inception libQGLViewer has had a very active open source community and has reached its current maturity and stability with the help of a worldwide community of like-minded developers. We like being an active member of the open source community and we are dedicated to remaining involved. By selling commercial licenses, we are able to staff a dedicated development team to ensure continued progress, quality enhancements and first-class technical support for developers using libQGLViewer products.

Which license shall you use?

Commercial license

This is the appropriate option if you are creating a proprietary application and you are not prepared to distribute and share your source code under the GPL.

Based on the Quid Pro Quo principle, if you wish to derive a commercial advantage by not releasing your application under an open source license, you must purchase a libQGLViewer commercial license.

Open Source License

libQGLViewer is an avid supporter of open source software. This is the appropriate option if you are creating an open source application with a license compatible with the GNU GPL license.

As a special exception to the terms and conditions of GPL, this open source license is also compatible with other licenses (QPL as used in CGAL for instance).

Valid XHTML 1.0! Valid CSS! Last modified on Thursday, December 29, 2022.