@Walkero
It's all on Yannick's SourceForge page:
https://sourceforge.net/p/zunetools/code/HEAD/tree/@Sinisrus
Back in years, I port AmiFig (on os4depot), and when it was os3 code it was pretty easy. Then later, when Yannick start to update and change it to ZuneFig (see
https://sourceforge.net/projects/amifig/ ), I tried to port it and found it as always happens with Zune based apps from AROS: it is not mui3.x or 4.x compliant. There some hacks, workarounds, and stuff, which just didn't work as expected on real MUI. Also, I tried to port before some of Yannick's Zune tools too, and while all more or less easy to compile and to have binary, those tools have just bugs and issues, which are issues of programs itself which didn't happen by luck on AROS (i know how many developers hate such claims, but that just experience I have over years with all amiga-ng oses)
The best example is unrelated to Yannick's work, which is LunaPaint. A damn paint editor which works on AROS by some luck, but absolutely buggy on morphos and os4. But, still somehow works on AROS (not sure if still on the latest ones, but 5 or 7 years that was like this). And issues were the "Zune only" code, and sadly to say Zune even today for 10 years still have issues.
So, it will be not just a straight port of anything, but real bug-hunting and some changes required. If I remember right, I report a few years ago some issues to Yannick, but he wasn't in interest to fix issues with "if it happens on os4 only, then it os4 issues", while issues were of course general, just as usual on OS4 you can catch more issues, which didn't happen on os3, aros or even on morphos. Ironically, but os4 is the best from all amiga oses in terms of default bug hunting.
If Yannick now ready to improve his apps so it will correctly work everywhere, I can be of help of course, and provide all the necessary changes need it for the os4 port, as well as reports and stuff. But if I remember right Yannick is of no interest in OS4 or anything, but in AROS only. Can be wrong of course.