I worked at an audio company previously, and one of my main jobs was porting a large acoustic simulation suite from Juce to Qt (EAW Resolution).
Unless you really need the audio specific features that Juce includes (we didn't as we did everything in-house) there's really no point to using it.
Qt has a bigger community, more extensive (and IMO more well thought out) libraries, and as has already been mentioned, a native look and feel that can't be beat. Not to mention, Qt is completely free for personal and commercial use.
The only popular commercial app I know of that is using Juce is Smaart by rational acoustics. They used MFC before that if I recall, so obviously the cross-platform capabilities are a huge bonus. I still wondered why they didn't move to Qt like us though.
Unless you really need the audio specific features that Juce includes (we didn't as we did everything in-house) there's really no point to using it.
Qt has a bigger community, more extensive (and IMO more well thought out) libraries, and as has already been mentioned, a native look and feel that can't be beat. Not to mention, Qt is completely free for personal and commercial use.
The only popular commercial app I know of that is using Juce is Smaart by rational acoustics. They used MFC before that if I recall, so obviously the cross-platform capabilities are a huge bonus. I still wondered why they didn't move to Qt like us though.