WireframeSketcher

WireframeSketcher is a software tool that helps you quickly create wireframes, mockups and prototypes for desktop, web and mobile applications. It comes both as a plugin for your Eclipse-based IDE and a standalone application. WireframeSketcher comes with an extensive set of widgets. You'll find buttons, checkboxes, trees, tables, you name it. Widget data can be quickly edited in-place. Widgets are very flexible and can be customized using properties or by applying wiki syntax directly in text. WireframeSketcher comes with more than 140 icons for your to choose from.

Requirements:

Java 1.5 or later

Limitations:

Fully functional trial. A watermark is printed on exported documents and a reminder appears after 1 week.