2.5. Why and when do I need a license?

The Qt Framework is dual-licensed under commercial and open-source licenses. The commercial Qt license gives you the full rights to create and distribute software on your own terms without any open source license obligations. The Qt open source licensing is ideal for use cases such as open-source projects with open source distribution, student/academic purposes, hobby projects, internal research projects without external distribution, or other projects where all (L)GPL obligations can be met.