This is the very first 3rd-party extension I install on every Joomla site Montano Designs develops. Akeeba offers a free version of this extension and a paid version. I purchased a license which the developer generously allows me to install on unlimited sites. For a mere $55 I can offer my clients easy to use back-up utilities. Included in this fee is the professional version of Akeeba Admin Tools (the second extension I install on every site).