Flatpak apps are becoming more and more popular these days as they allow you to install certain apps that aren???t available or regularly updated in the software repositories of your GNU/Linux distribution. While they run sandboxed, limited access to the host environment, Flatpak applications require certain permissions. Tracking and changing these permissions for all of your installed Flatpak apps could become cumbersome or time consuming. Developed by Martin Abente Lahaye, Flatseal features a simple, straightforward design that does exactly what it says on the tin. It presents users with a list of installed Flatpak apps and basic permissions.