Elementor - Elementor is a front-end drag & drop page builder for WordPress.
Layers Themes - WordPress site builder that makes site creation quick & easy
Pinegrow WP - Convert static HTML websites to WordPress themes.
Webydo - A code-free web design platform that empowers professional designers and agencies to create & manage pixel-perfect, responsive sites.
Divi Theme - A flexible WordPress theme with the power of Divi Builder built in.
Bulma - Bulma is an open source CSS framework based on Flexbox and built with Sass. It's 100% responsive, fully modular, and available for free.