umlet binary package in Ubuntu Bionic armhf

 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.

Source package