ISO Image Writer is a free and open source image writer software for Linux. Using ISO Image Writer Software, you can write ISO files to any USB pen drives and make it bootable. It is a simple and easy to use app and still in early stage of development and released under GNU General Public License v3.0.
How to install ISO Image Writer on Ubuntu Linux
ISO Image Writer is available as a flatpak package file from the remote flathub. First install the latest version of flatpak and flathub on your system and restart it after the installation. Follow below link for the flatpak and flathub installations tips.
After that open the terminal software using the ctrl+alt+t keys and run below ISO Image Writer app flatpak install command. It will install the latest version of ISO Image Writer on your system.
flatpak install flathub org.kde.isoimagewriter
You can open ISO Image Writer using below command or via the show applicationb menu from the Ubuntu dock.
flatpak run org.kde.isoimagewriter
And you can also uninstall it using below command.
flatpak uninstall org.kde.isoimagewriter
sudo flatpak uninstall org.kde.isoimagewriter