An Open Source graphical application that allows users to uninstall operating systems
OS-uninstaller is a very simple utility that lets any user to perform a clean and quick uninstall of any installed operating system, with a single mouse click. It supports any Linux distribution, as well as Windows and Mac OS X operating systems.
Unfortunately, OS-Uninstaller in only available for the Ubuntu Linux operating system. To install it, open a new Terminal (Ctrl+Alt+T), then type:
sudo add-apt-repository ppa:yannubuntu/boot-repair
Press Enter, then type:
sudo apt-get update; sudo apt-get install -y os-uninstaller && os-uninstaller
Press Enter. Launch OS-Uninstaller from the System -> Administration menu if you use GNOME, or via the Unity Dash if you use Unity. Then choose the operating system you want to remove and click the "OK" button.