In D8403#158063, @tfry wrote:

You are right, thanks. Webkitwidgets seems to be present since at least Qt 5.1, so that should not be a problem indeed.

In T6895#113166, @ngraham wrote:

I don't know the technical details. All I know is that I can't remember the last time in the past 16 years of being a (prior) full-time macOS user when a PDF I annotated didn't print properly or display properly in Acrobat Reader, Foxit Reader, or anything else I happened to use to open it.

In T6895#113154, @ngraham wrote:

Right now Okular's annotations have a major problem: they aren't consistently compatible with viewers that aren't Okular. Annotations are often not visible when printing or viewing with another problem.

In T6895#112936, @GreatEmerald wrote:

RKWard really needs more work porting to KF5!

In T6895#112778, @colomar wrote:

Good point, being easily available on macOS and especially Windows is indeed key for establishing our apps in new sectors.
From your experience, how important is macOS compared to Windows?

i'm working on proposal 1) already (team RKWard). for instance, i was given the opportunity to do a software presentation at the 50th DGPs congress in 2016. the fact that i was given a full 90 min slot in the second largest hall can be seen as an indicator that there's actually a growing interest in software alternatives. i handed out USB sticks with a KDE live system, RKWard and various R packages, not only to invite participants to try it, but also to demonstrate that you are allowed to just give the software to all students and staff. it would already make a lot of sense to have a RKWard booth at such a conference. i'd gladly do that, so i guess you can count me in on "willing to put work into this". but without funding you can only do so much.