Over the past year I have taken all I know (insert joke here) on designing and 3D printing insoles and packaged that up into a mostly all-in-one piece of software called Gensole®.
What is Gensole?
Gensole is a browser based tool which allows you to design insoles, optimised for 3D printing using the FDM process and Filaflex (TPE/TPU) type materials. It will ultimately export .AMF files for importing into Slic3r for 3D printer toolpath creation.
It is free for makers, and researchers for non-commercial use :