Seconded. The QT licensing is actually more restrictive than other dual-licensing schemes: TrollTech will not allow you to start developing your application wi

Seconded. The QT licensing is actually more restrictive than other dual-licensing schemes: TrollTech will not allow you to start developing your application with a free version (including the ones distributed with Linux), then switch to a commercial license later. In other words, if you think there is any chance you'd want to distribute any of your application's code under a non-GPL license, you need to get a QT commercial license before a line of code is written. http://trolltech.com/developer/knowledgebase/182/ http://trolltech.com/developer/knowledgebase/182/