Trello is a visual project management tool that helps individuals and teams organize tasks and projects using boards, lists, and cards. Each card can represent a task, and users can move them across lists to indicate progress, making it easy to track work in a collaborative environment. With its user-friendly interface, Trello allows for customization through labels, due dates, and attachments, enhancing productivity and communication. It is widely used in various industries for managing workflows, brainstorming ideas, and tracking project milestones, making it a versatile tool for both personal and professional use.