It's FOSS - https://itsfoss.com/install-snap-linux/
Brief: Snaps are Canonical’s way of providing a cross-distribution package management system. In this article, we will see how to install and use snaps in various Linux distributions.
Snaps are basically an application compiled together with its dependencies and libraries – providing a sandboxed environment for the application to run. These are easier and faster to install, can receive latest updates and is confined from the OS and other apps.
An application can be packaged for every Linux