Ultimate Papercraft 3D is mentioned in the article, but the link is incorrect.
Here is the correct link:
Ultimate Papercraft 3D - Papercraft Software
And for those who spend most of their time looking for papercraft software that will do all the work of creating paper models,
papercraft3D is just another pepakura type software...that "unfolds" existing 3D models.
All of these extensions for Inkscape, and Papercraft 3D (and pepakura) require you to already have a completed 3D model.
Something created in 3D modeling software or CAD/CAM software.
Unfortunately most of the people looking for the easy-way-to-papermodels
are trying to turn 3D objects from digital games into 3D paper models.
Work that has already been done by someone else
and in most cases is intellectual property and copyrighted material.
This is basically IP piracy.
But even for legitimate modelmakers, there are no easy steps to a completed paper model that you can distribute (or sell)
and there are no no-work/easy-creation papercraft software.