This Toolbox is a fortran module which can be used inside modern Fortran compilers. For compatibility reasons to commercial FEM Software packages it is written in Fixed Format.
This Toolbox is tested on Windows with both Intel Fortran >2015 (in combination with MSC.Marc) and GFortran >6.3. If you are using Linux it should work (but it is untested).
Download the module, put the ttb-Folder in your working directory and you are ready to dive into comfortable tensor manipulations in Fortran.