Actually I prefer SWT or Swing with Java for a mature looking, cross-platform application. I thought Qt went away until I read Ubuntu will use something new for Qt called QML. If I were to consider something for Linux Desktop GUI's other than SWT/Swing/Java I would probably use Gtk+Python.
No, really swing is aweful. I had to use many years ago, and it was very slow then. I've liked SWT (native+java) from eclipse for a while, but wanted to use more on the native c/c++ but wasn't that straightforward...
Why did you downvote me when we simply have a different opinion? Is the expression of opinions no longer welcome on HN? I don't have the ability to downvote you? Does your ability to downvote me mean your opnion is more valid than mine?
This really isn't up to some subjective opinion either. Swing doesn't have a native look & feel on any platform: it's awful no matter what OS you're using.
Most authors of niche or custom software either don't care about native look and feel (making application with modules written in C with Motif, Qt, MFC, Tcl/Tk, Java and two or so custom languages look seamless is colossal waste of time and that kind of construction seems to be common for most niche things I've seen) or actively make their applications look non-native (Even Microsoft's ERP solutions have decidedly non-native feel to them).
