Qt Design Studio Community edition is a free and open source UI design and development tool for Linux, Windows and MacOS. The community edition is free and it also available as a paid commercial license. Using Qt Design Studio, you can rapidly prototype and easily create complex user interfaces (UI).
Install Qt Design Studio Community edition on Ubuntu
Qt Design Studio Community edition is available as a flatpak package file from the flathub. First install flatpak and flathub on your system and restart it after the installation.
Install flatpak and flathub on Ubuntu
Now open the terminal command-line app (ctrl+alt+t) and run below Qt Design Studio flatpak install command.
flatpak install flathub io.qt.qtdesignstudio
It will install the latest version of Qt Design Studio on your system. After that open the app using below command.
flatpak run io.qt.qtdesignstudio
You can also open it using the Show Apps Ubuntu dock application menu.
If you don’t like then uninstall it using below commands.
flatpak uninstall io.qt.qtdesignstudio
[OR]
sudo flatpak uninstall io.qt.qtdesignstudio