softaculous
Softaculos is an addon for cpanel, that allows you to auto-install various web applications like WordPress, phpBB, Joomla, Magento, etc.
To install Softaculos, run
wget -N http://files.softaculous.com/install.sh chmod 755 install.sh ./install.sh
You need to enable ioncube, this can be done in WHM > Tweek Settings