This is the EXACT same plugin as distributed by the developer on CodeCanyon. The developers’ links are provided above.
Smart Sections Theme Builder is a WordPress Plug-in that you can visually edit and customize any part of your website with WPBakery Page Builder a.k.a. Visual Composer. You can create new horizontal or vertical headers for your website and replace it with your default theme header. You can also create footers, sidebars, mega menus, sticky items, mobile menus and layouts for content pages. You can even create listing card design templates for post grids or your archive pages.