Flatpak is a utility for software deployment and package management for Linux.

It provides a sandbox environment in which users can run application software in (partial) isolation from the rest of the system.

[7] Applications using Flatpak need permissions to access resources such as Bluetooth, sound (with PulseAudio), network, and files.

These permissions are configured by the maintainer of the Flatpak and can be added or removed by users on their system.

[14][15][16] Theoretically, Flatpak apps can be installed on any existing and future Linux distribution, including those installed with the Windows Subsystem for Linux compatibility layer, so long as bubblewrap and OSTree are available.