I have a project that wish to be Cross-platform (windows, osx, linux in that order). The only tool I could use with some decent widgets is Delphi (but cost too

I have a project that wish to be Cross-platform (windows, osx, linux in that order). The only tool I could use with some decent widgets is Delphi (but cost too much and kill the idea of release the tool as open source). After that, what exist? QT is horrible. GTK look bad and weird (equal others like wkWidgets). Doing one for each target is the best but harder. I know some people think QT/GTK is good, but as user of Delphi, them are ugly in comparison and less featured. Even winforms is barely a match. HTML+JS+CSS is far easier, at least, to get the look. Then is the problem in how make it attractive for contributors. I wish exist a way to get a html fast/light html rendered for the GUI.