The jQuerin Grid Builder lets you create responsive grids in a visual manner and outputs semantic and clean html & css code.
See it in action below jquer.in/builder.html
There are dozens of frameworks out there like Zengrids,ZURB,Less,Bootstrap,Blueprint ,Elastic,960.gs... the list goes on.You can build jQuerin Grid builders for your favourite framework.Alternatively You can make the jQuerin Grid Builder more awesome by including more options of your choice like creating the Sass code for this.
Plugins/Libraries I have used
For any Queries or just saying kudos ,tweet me @techiejayk
This is licensed under MIT and GPL licenses