loscabrones:

Pepakura Designer allows you to create paper craft models from 3D data. Pepakura Designer is developed in Japan and has been translated to English. This software is open to the public as shareware so you can download and try it freely although some advanced features are limited until you purchase a license key.

Pepakura Designer does not contain software to create the original 3D models, but instead translates them to a 2D printable format.