I think I came across something that may help.....
A website to find comparable open-source and propriety software
Snaps are universal Linux Packages
An app store and build service for Linux
Appimagehub Repository
XtraDeb – The Ubuntu packages you are looking for
Pacstall - An AUR Repository for Ubuntu
Download APK Fast, Free and Safe on Android
F-Droid - Free and Open Source Android App Repository
