Obeo Designer Community
Obeo Designer allows you to easily create your own graphical modeling workbenches for specific domains (industrial systems, software applications or the organization of major...
The free UML tool UMLet lets you draw UML diagrams with a light-weight, pop-up-free user interface. It lets you draw diagram sketches fast; export diagrams to pdf, eps, jpg, gif...
waiEclipse Y[wai] : Web Application Innovator Pure HTML, HTML5, JavaScript based Web Development UI/UX Platform. It means that you can quickly and easily innovate your web...
WireframeSketcher is a rapid wireframing tool that helps quickly create wireframes, mockups and prototypes for desktop, web and mobile applications.
Zephyr is a library to visualize stream of data in real time. Screenshots and videos on: http://zephyrplugins.github.com/