This tutorial shows how to add Flatpak and AppImage package format support in Ubuntu, as they are not supported out-of-the-box. It provides instructions for installing Flatpak and Flathub, as well as enabling AppImage support by installing libfuse2.
```
sudo apt install flatpak
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
```
```
sudo apt install flatpak
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
```
