Snap Package
A Snap is a containerized Linux application package, installable on any distribution running snapd - which includes Ubuntu (where it's preinstalled), and most other major distros. Snaps bundle their dependencies, run with configurable confinement, and update automatically through the Snap Store.
For app publishers, the Snap Store is the closest thing desktop Linux has to a mainstream storefront: search, listings, ratings and automatic updates, without asking users to add repositories or download files. Publishing means registering a name in the store and uploading builds under your publisher account.
Snaps complement rather than replace .deb packages: the deb serves direct downloads and Debian-family purists; the snap serves store discovery. Deskifier builds both, and its snaps are ready for Snap Store submission.