Add Professional Gantt Charts to your Java Applications. FlexGantt is an advanced Gantt chart user interface component for Swing, which allows its users to interact with project plans and scheduling results. Applications using FlexGantt can customize the Gantt component in almost any way. Not only the rendering and editing of timeline related data can be modified but also the behaviour of the entire component. This is accomplished by pluggable policy implementations, where each policy controls the behaviour of a certain aspect of the Gantt chart. FlexGantt uses a very high abstraction level, which allows it to be applied in various and often very different domains such as project planning (resources, people, tasks), ERP systems, production planning and scheduling applications, manufacturing execution systems or project portfolio management applications.