In technical terms a page builder framework would refer to the underlying structure on which a websites page layouts are constructed. The Page Builder Framework theme for WordPress, fulfils this very task by accommodating the requirements of popular WordPress page builders.
Disclosure: Please bear in mind that some of the links on this site may be sponsored links and if you make a purchase I may earn a commission. Please also keep in mind that the companies and the products I mention are ones that I use myself, or have tried. And are mentioned for their quality or usefulness I have experienced myself