Agility comes with 2 masonry style – fluid width templates
What is masonry? Its a system of laying out posts in a grid and allowing them to expand, contract and rearrange based on the width of the browser window. That’s what makes them “fluid”.
Regular users can choose from the 2 column or 3 column fluid grid custom templates.
The power user can place fluid grids anywhere
So yes, this does mean working in the skin editor, but if you are comfortable with it you can build different configurations easily. You can do this with any archive type of template or use it with a query box to get a fluid grid anywhere.
Plus the power user can choose how many columns they want the posts to show in. It’s pretty sweet!