UMLet is a UML tool aimed at providing a fast way of drawing UML diagrams. UML elements are modified using text input instead of pop-up dialogs. Elements can be modified and used as templates; this way, users can easily tailor UMLet to their modeling needs. UMLet supports a variety of UML diagram types: class diagrams, use case diagrams, sequence diagrams, state diagrams, deployment diagrams, activity diagrams, etc.

UMLet can only be used for drawing UML diagrams, it does not support code export or the XMI format. UMLet allows one to export diagrams as images or PDF.