Gridster.js
Gridster is a jQuery plugin that makes building intuitive draggable layouts from elements spanning multiple columns. You can even dynamically add and remove elements from the grid.
More at http://gridster.net/.
Live Preview at: http://dsmorse.github.io/gridster.js/
Gridster was created by Ducksboard but they have basiclly abondoned the project and even those who had write permissions to the repo are not merging pull requests.
Forks
As of result of the inactivity over the last year in the Ducksboard repository, @dsmorse has created a fork for current support. He will GLADLY accept pull requests, and will be working to merge existing Pull Requests from Ducksboard repo.
Contributing to this project
Anyone and everyone is welcome to contribute. Please take a moment to review the guidelines for contributing.
License
Distributed under the MIT license.
Whodunit
Gridster is built by Ducksboard with the help of all these wonderful people.