How to install Softaculous?
Softaculous has a very easy installation script that is a snap to use.
To begin, you need to purchase a Softaculous license from either Softaculous or an authorized distributer. I suggest BuycPanel
The license will give you full functionality and give access to all the scripts Softaculous offers. You can still install it without a license though, but it will have far less available scripts.
Once you have a Softaculous license, simply run the following from an SSH session:
wget -N http://files.softaculous.com/install.sh;chmod 755 install.sh;./install.sh