Hexaflexagon Toolkit
- A free application that can generate a hexaflexagon template and folding instructions from six user selected images. Examples Source Code included.
- http://hexaflexagon.sourceforge.net

Flexagons
- Includes a definition of the word, instructions on how to make a Trihexaflexagon, how to flex it and information about it and another flexagon.
- http://www.mathematische-basteleien.de/flexagons.htm