SP Page Builder 3 is a revolutionary product of flexible drag & drop page building for Joomla. It's a visual layout tool to help you build layouts and add content for new pages and articles (after integration enabled). The content editor interface lets you do so much than what’s currently possible with the default Joomla features based mostly on modules. It allows you to separate your page builder from your template and get complete control of your content. The component can be used with almost any Joomla Template and you can switch templates without losing your content and design. The Pro version comes with pre-made page templates and premade sections (rows) to help you get started. 

https://www.joomshaper.com/documentation/sp-page-builder/sp-page-builder-3