UMLet is an open-source UML tool with a simple user interface: draw UML diagrams fast, export diagrams to eps, pdf, jpg, svg, and clipboard, share diagrams using Eclipse, and create new, custom UML elements.
Quorum is a general purpose tool that we call an "evidence-based" programming language. It started as an interpreted language originally designed to be easier to hear through screen readers for blind or visually impaired users.
