Hi Zein, Qt 2.3 (non-commercial) works fine. We tested with this one. NOTE: There is *no* dependency at all between Qt and ITK. Only your application will be dependent on both of them. Regards, Luis -------------- salah wrote: > Thanks Luis, > a short question: Which version of Qt > would work most finely with Itk? > I have Qt 2.3 non-commercial edition. > > Zein >