PyDialog is described as 'My problem was that the KDialog code is still not ported to Qt5 and it depends on various Qt4/KDE4 components. The kdialog has big dependency sizes so we made an alternate dialogs like kdialog switches, options'. There are seven alternatives to PyDialog for Linux and Windows. The best alternative is Zenity, which is both free and Open Source. Other great apps like PyDialog are KDialog (Free, Open Source), MessagePop (Free), dialog (Free, Open Source) and xmessage (Free, Open Source).
Xdialog is designed to be a drop in replacement for the "dialog" or "cdialog" programs. It converts any terminal based program into a program with an X-windows interface. The dialogs are easier to see and use while adding even more functionalities (e.g.