Due to AJAX mechanism of data loading dhtmlxGrid provides great responsiveness and allows web developers to design interactive and rich user interface. As grid is loaded asynchronously from server, table data can be sorted and edited without page reload.
Such features as Buffering and Dynamical Loading increase the performance of tables with great number of records. The main advantage of those mechanisms is in the ability of the table data to be loaded dynamically from server on demand and to be rendered dynamically on client side while scrolling through the table.
More information about dhtmlxGrid 1.0 can be found on Grid Home Page.
dhtmlxGrid is available under GPL and commercial license ($149, includes 3 months support period and allows using dhtmlxGrid in commercial projects).