I personally prefer Qt, but as was discussed elsewhere in this thread, there is definitely some FUD around licensing. You should be able to build your entire ap

I personally prefer Qt, but as was discussed elsewhere in this thread, there is definitely some FUD around licensing. You should be able to build your entire app with Qt's LGPL modules, though, which allow you to remain closed source while not paying for Qt. If you go to the effort of making your app cross-platform, please go ahead and add official Linux support as well. I don't personally have a need for your app, but I'd love to see more apps for the Linux ecosystem that aren't just "we built a FOSS alternative because $SOFTWARE doesn't support Linux".