> I smell a GPL violation here. Unless they have been specifically granted a licence other than the GPL, which the original maintainer(s) would have the right

> I smell a GPL violation here. Unless they have been specifically granted a licence other than the GPL, which the original maintainer(s) would have the right to do (assuming other contributors, if any, agreed or signed over the relevant rights when contributing). Edit: in fact both qucs and qucstudio are listed as authored by Michael Margraf which might make that relicensing/cross-licensing process simpler.