Cornerstone Page Builder GPL Overview:

Cornerstone is a 100% front-end WordPress page builder that will change the way you create pages. Gone are the days of having to click back and forth between a clunky admin panel and your site. Now you can see all of your work as you build the page, bringing fun back into the creative process. We spent just about as much time preparing to develop Cornerstone as we did develop the tool itself with much of that time being devoted to testing and working with dozens of potential interfaces to find the best possible experience for our customers. We can’t wait for you to see it for yourself! We keep the code lean with a focus on extensibility and customizability. Cornerstone is continually updated with new elements, templates, and 3rd party tools as we work side by side with many in the industry to make sure your Cornerstone experience is predictable, enjoyable, and second to none. With the click of a button, Skeleton Mode allows you to visually see the structure of your entire page without leaving the front-end interface. Move elements around, configure them, and more. You’ll wonder how you ever built pages without it!