That's maybe because, since he's also selling commercial license, Qt must be paid for(Qt is only LGPL/GPL for OSS). Some people refer to anything not "completel

That's maybe because, since he's also selling commercial license, Qt must be paid for(Qt is only LGPL/GPL for OSS). Some people refer to anything not "completely" free to use, as proprietary. It funny because his software would be "proprietary" in case that's what he actually meant.