Currently the Mohid system is windows oriented, with all the GUI tools developed using the .NET framework. The numerical model's source code uses standard FORTRAN 95, meaning it is intrinsically portable.
At the present state of development only windows executalbes have been released. Eventualy IST will open source the numerical model's code under an OSI license, most likely GPL.
The FORTRAN 95 compiler of choice is Intel® Fortran Compiler , available for Windows, Linux and Mac OS. Makefiles and instructions will be targeted to this family of compilers.
There are detailed instructions on how to compile Mohid in Windows and *NIX platforms.