WP2Static - Static site generator for WordPress
Elementor - Elementor is a front-end drag & drop page builder for WordPress.
GatsbyJS - Blazing-fast static site generator for React
Brizy - The effortless way to build WordPress websites visually
Hugo - Hugo is a general-purpose website framework for generating static web pages.
Divi Theme - A flexible WordPress theme with the power of Divi Builder built in.