If you are interested in how it works, please check this github page
Area of Devs
https://github.com/area-of-dev.
You can find a repository for every AppImage available here. Please feel free to make a pull request if you have something to add / improve.
There are obviously lack of any description and everything you can find here might work fine but it is just a proof of concept.
The concept of an AppImage-based package manager and application-store.
You have been warned!