PaperCube has been released as open source software under the MIT license on GitHub.
For more information about the project, look at the wiki:
http://wiki.github.com/pbergstr/PaperCube
To learn more about PaperCube, you can try it out at
http://papercube.peterbergstrom.com, view the demo video at http://vimeo.com/5661651.
If you want to read more about PaperCube and related research go to
http://www.peterbergstrom.com/research/
There is code reference documentation for PaperCube and the NodeGraph
framework at http://www.peterbergstrom.com/papercube_docs/ and
http://www.peterbergstrom.com/nodegraph_docs/, respectively.
In related news, I want to also highlight that the research that spawned PaperCube has lead to my Master’s thesis and two papers. First, Digital Library Visualization Using SproutCore and SVG, presented at SVG Open 2009. Second, Augmenting the Exploration of Digital Libraries with Web-Based Visualizations, presented at ICDIM 2009.