A plethora of software estimation tools are available, each claimed to be better than the others, thereby confusing prospective buyers. An effective tool ought to provide for all four aspects of software estimation, namely, size, effort, cost, and schedule.
tool for product life cycle
unit cost. So, the tool must allow for parameterization and maintenance of cost items (that is, adding, modifying, and deleting of data for cost items). It is also likely that PD costs vary from project to project as well. Therefore, the third, fourth, and fifth criteria for selecting a software estimation tool are the tool must allow software cost estimation the tool must provide for parameterization of PD cost the tool must provide for maintenance of cost items Scheduling the Software Project Effort is