Fortran Wiki
Interoperability
Fortran interoperability is possible with many other languages.
C
Fortran 2003 provides standardized support for C interoperability.
See c_interface_module for an example of using type aliases to produce better-defined C interface prototypes.
Code::Blocks IDE plugin FortranProject has a BindTo tool which generates interfacing code to call Fortran from C.
C++
C#
Lua
Lua is a highly portable scripting language, suitable for inclusion in host programs. It is widely used for configuration files, and to this end is also useful for Fortran applications, a wrapper library called Aotus is available for this purpose.
Matlab
See Matlab
Octave
See OctaveFortran on the Octave wiki.
OpenCL
A language that allows to write parallel code for massively parallel processors like graphical processing units (GPUs), accelerator boards and multi-core CPUs. OpenCL is based on a C library, but you can run OpenCL code directly from Fortran with the FortranCL library.
Python
See Python.
R
See R
Ruby
fortio-namelist - Ruby library for reading and writing data in Fortran’s namelist format, by Himo Toyoshi
Tcl
See Tcl.
Julia
See Calling C and Fortran code in the Julia documentation
Compilation or translation from Fortran to other languages
Several programs compile or translate Fortran code to other languages:
Fortran to C
f2c This is still widely distributed and multiple versions have been developed.
fwrap wraps Fortran code in C, Cython and Python.
promulaFortran A commercial program.
Fortran to C++
Fortran to Java
Fortran to Lisp
Fortran to Python
f2py: Fortran to Python interface generator.
f90wrap is a tool to automatically generate Python extension modules which interface to Fortran code that makes use of derived types.
Code::Blocks IDE plugin FortranProject has a BindTo tool which generates interfacing code to call Fortran from C, Cython and Python.
fwrap wraps Fortran code in C, Cython and Python.