It’s a WordPress plugin being developed by WP Types, called Toolset Layouts. Toolset Layouts is designed for WordPress developers who want to take use of the full power of Bootstrap, as well as a drag-and-drop editor that makes it easy to customise.
Toolset Layouts Features :
- Convenient Bootstrap design for perfectionists.
- Drag-and-drop design on the entire page.
- And there’s more.