Flatpak is a software utility for software deployment and package management for Linux. It is advertised as offering a sandbox environment in which users can run application software in isolation from the rest of the system.
Snappy is a software deployment and package management system developed by Canonical for the Linux operating system. The packages, called snaps, and the tool for using them, snapd, work across a range of Linux distributions allowing distribution-agnostic upstream software packaging.
AppImage is a…