Buy a commercial license if you are intending to create a proprietary application that uses libQGLViewer.
GNU GPL license
This code is released under the terms of the GNU-GPL license.
Any software you create that uses any part of this source code (or its compiled version) will have to be open sourced under the same conditions.
Select your architecture:
Previous versions of the library as well as md5 check sums are available in the
source repository.