For Genesis Framework: Allows modifying of default layouts for homepage, various archive, attachment, search, 404 pages. Plus: up to 9 new layouts!
When using a Theme Blvd theme, this plugin gives you slick interface to build custom layouts.
pootle page builder helps you create stunning pages with full width rows including parallax background images & videos.
Customize Your Dashboard Main Page, New Layouts, you can simplisity customize your dashboard links to access quickly to your sittings, pages, posts an
WP App Studio is a Professional WordPress Plugin Development Platform for building custom post types, fields, taxonomies, widgets, forms, notification
Widget to easy add any content preview block with different layouts, specified in the theme.