Akeeba Backup Pro is the most widely used open-source backup component for the Joomla! CMS.
Demo: https://www.akeeba.com/subscribe/akeebapro.html
Compatible with JPA, JPS & ZIP archives, PHP 5.4.0 and later. Extract your ZIP, JPA and JPS archives directly on your server. No need to upload thousands of files.
Demo: https://www.akeeba.com/products/akeeba-kickstart.html
Akeeba Admin Tools Pro is a true Swiss Army knife for your site.
Demo: https://www.akeeba.com/products/admin-tools.html