ClickUp is a project management and productivity software that allows users to organize and collaborate on tasks, projects, and goals. It features a variety of tools, including task lists, calendars, Gantt charts, and time tracking, that can be used to plan and track progress on projects. Additionally, ClickUp offers a range of collaboration features, such as the ability to assign tasks, add comments, and share files, that make it easy for teams to work together. The software is available in both free and paid versions, with the paid version offering additional features and integrations.