Flexigrid is a jQuery based way of making flexible data grids, either by inputting fresh data or grabbing it from an existing table, XML, or JSON source. The "flexi-" in Flexigrid refers to its resizable height, width and columns. Flexigrid also now has a toolbar, a search function, and its own API.

Although the API isn't documented yet, there's enough there to figure out how to do the most important things Flexigrid does: collecting and sorting your data. It'll use Ajax to populate your new grid from an XML source, and there's an auto-resizing function so you don't have to mess with your columns too much right off the bat. The CSS should also be editable, so you can hack in your own theme if you're ambitious.