Flatpak
directly supported by software installer in linuxMint - Flatpak is not the future
see also AppImage for solution comparison.
❯ why didn’t you need sudo right to remove the system version?
You’re in the sudo group, and there’s a polkit rule on this system that grants members of the sudo group automatic permission to modify system flatpaks — without any password prompt.
# Kubuntu ⮺
Kubuntu supports Flatpak, but it is not enabled by default on most releases.
$ sudo apt install flatpak
$ flatpak remote-add --if-not-exists \
flathub https://flathub.org/repo/flathub.flatpakrepo
# (Recommended) Install KDE integration
$ sudo apt install plasma-discover-backend-flatpak# Snap vs Flatpak
| Snap | Flatpak | |
|---|---|---|
| Primary focus | Desktop apps + system services | Desktop applications |
| Default on Kubuntu | Available, used for some apps (e.g. Firefox) | Supported, but must be installed/enabled |
| Updates | Automatic by default | Manual or configurable automatic updates |
| KDE integration | Good | Very good with plasma-discover-backend-flatpak |
| Best use case | Ubuntu-integrated apps and services | Cross-distro desktop applications |
# Launching from command line ⮺
# install
$ flatpak search <package_name>
$ flatpak install flathub <Application ID>
# launch
$ flatpak list
$ flatpak run org.darktable.Darktable
# removing package
$ flatpak uninstall <application-ID>
$ flatpak uninstall darktable
$ flatpak uninstall org.darktable.Darktable # same as above
$ flatpak uninstall --unused # similar to apt autoremove
Written on October 30, 2023, Last update on July 28, 2026
linux-system
appimage
docker