PaperToolkit is a free, open source toolkit for designing pen and paper applications. Applications generated with this tool are intended for printing on a paper surface that allows some digital interaction, such as the related ButterflyNet or Interactive Gigapixels Prints. Suggested applications include interactive newspapers and smart notebooks. This toolkit is currently under development; code, documentation, tutorials and demo applications are all available.

Gigapixel is a free tool to facilitate experiments in collaborate workspaces, enabling printed visualizations to be augmented with projectors and mobile devices. This tool has been succeeded by PaperToolKit, and continues to be available as a reference resource.