Actually the development of Qucs is ongoing, it's just that they are a little late on making the jump from Qt 4 to Qt 5, so Qucs isn't in available in some dist

Actually the development of Qucs is ongoing, it's just that they are a little late on making the jump from Qt 4 to Qt 5, so Qucs isn't in available in some distributions that removed Qt 4 at the moment (e.g. Arch).