Gantt charts are used to track progress and organize projects. They are most commonly used for large-scale projects with a lot of moving parts. The Gantt chart is a project management tool that uses bars to represent activities and tasks. There are two types of bars: the start and finish bars, which represent the beginning and end of an activity, respectively, or the task bar that represents the progress of a single task within an activity. Gantt charts can be useful when you need to track your progress over time but they aren't always practical when you need to track multiple tasks at once.