Project management tools

People often ask what sort of tools a project manager needs to manage projects effectively and with a minimum of interruptions. Often linked to this question may be another; what skills, other than the basic PM skills covered in the PMBOK, should a PM have to be more effective. Basic tools, such as the Project Charter, Work Breakdown Structure, schedule, plans for risk, quality, communications, people, scope, time and cost management are becoming familiar tools for PMs. What else might be useful? This, to a certain extent, is project or project domain specific. But there are some tools that have a fairly broad applicability.