Muuri creates responsive, sortable, filterable and draggable grid layouts with lots of features in one library. Comparing to what's out there Muuri is a combination of Packery, Masonry, Isotope and jQuery UI sortable.
gridstack.js is a jQuery plugin for widget layout. This is drag-and-drop multi-column grid. It allows you to build draggable responsive bootstrap v3 friendly layouts. It also works great with knockout.js