Many of the best features of some of the analytical capacity and delay models just described have been integrated recently in a number of new software packages (Long et al. 1999, Stamatopoulos et al. 2003, EUROCONTROL 2001) that perform both capacity and delay analyses and, in the instance of the last two references, include models of aprons and aircraft stands. After some necessary enhancements and an adequate amount of testing in a variety of airport environments, packages of this type may provide airport planners within a few years with an easy-to-use and very fast set of tools for the study of a host of airside issues.