I have been using Divi for more than a year now and I really love it. People at Elegant themes are constantly developing and upgrading the tools Divi have and as I searched, it is still less expensive than Webflow to get and host a website. Webflow is an amazing tool, but Wordpress still has a solid reputation.
Elementor - Elementor is a front-end drag & drop page builder for WordPress.
Laserfiche - Laserfiche offers powerful document management software solutions that are easy to implement and easy to use.
SiteOrigin Page Builder - Build responsive grid-based page content that adapts on WordPress
DocuWare - DocuWare is a next-gen document management system that is specially designed for transferring paper-based and digital assets into collective resources.
Visual Composer - Visual Composer is an advanced website builder for WordPress.
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.