Porto Studio is a page building tool which provides pre-defined layouts and styles for Porto.
Please check Porto Studio site to see what Porto Studio is and how it works.
This is available in WPBakery Page Builder Bakend Editor and Frontend Editor.
Porto Studio panel has category filter section at the left and demo filter section at the top.
Porto Studio allows you to import blocks in a page so you can easily create new page and it is possible to combine several demo contents into a page.