#prototype wireframe

The Pencil Project's unique mission is to build a free and opensource tool for making diagrams and GUI prototyping that everyone can use.

Top features:

Built-in stencils for diagraming and prototyping

Multi-page document with background page

Inter-page linkings!

On-screen text editing with rich-text supports

Exporting to HTML, PNG, Openoffice.org document, Word document and PDF.

Undo/redo supports

Installing user-defined stencils and templates

Standard drawing operations: aligning, z-ordering, scaling, rotating...

Cross-platforms

Adding external objects

Personal Collection

Clipart Browser

Object snapping

Sketchy Stencil