Get the Latest Release:
- Pencil 1.3-4 for Firefox 4+~1,8MB, file from Google Code.
Compatible with Firefox 4 to 11.Older builds of Pencil including standalone versions are available in the download page - for GNU/Linux and Windows.
If you find Pencil useful, please consider supporting its development.
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
- And much more...
Licensing and Versions:
Pencil will always be free as it is released under the GPL version 2 and is available for virtually all platforms that Firefox 4+ can run. The first version of Pencil is tested against GNU/Linux 2.6 (Fedora, Ubuntu and Arch) with GTK+, Windows XP and Windows Vista/7.

