Pencil

Pencil includes built-in stencils for diagramming and prototyping, multi-page document with background page, inter-page linking's, on-screen text editing with rich-text supports, exporting to HTML, PNG, Openoffice.org document, Word document, and PDF, undo or redo supports, installing user-defined stencils and templates, standard drawing operations: aligning, z-ordering, scaling, and rotating, cross-platforms, adding external objects, personal collection, clipart browser, object snapping, and sketchy stencil.