I noticed the main place to download modules is here
https://github.com/Magisk-Modules-Repo
some in the links section link the source which just loops back to the same page. So are all the modules hosted on github itself open source? as i see what looks like the contents of each module there.
I suppose some modules might be posted on XDA that aren't on github and i know not all Xposed modules on Xda or repo.xposed.info aren't open source.
Appreciate all help.