I was not sure if i can reveal which software i want to target.
Okay i havnt had any time yet to look into it again with the ideas i got here.
I found this app here by Mindomo, which provides offline Concept Maps.
Free version is limited to 40 topics.
you can find it here.
Code:
https://www.mindomo.com/download/10.0/Mindomo_v.10.0.3_x64.exe
Like i wrote it uses a 100+MB exe file, but also has an asar file, which i could unpack.