Introducing Cpanel's Softaculous and the Application Vault on Plesk.
Softaculous is an auto installer for cPanel. Unlike other auto installers, Softaculous is much faster, well designed and it installs all scripts in just ONE STEP. As of August 2016, Softaculous has 396 great scripts and more are being added every day. Softaculous seamlessly integrates with cPanel for a powerful user experience.
The Application Vault is the built-in One-Click App Installer for Parallels Plesk. With the Application Vault, you can install all your favourite apps like WordPress, Drupal, Mambo, Joomla, phpBB, OSCommerce and many, many more. The Application Vault uses the open-source APS catalog so adding apps is very easy for us webhosts.