I am still using the Knoppix 5.3.1 DVD . It has many of the utilities I need ... Gnu gfortran, Gnu C, Nedit, Perl, gawk ...
It is a nice environment to do some engineering programming in mixed fortran and C .

I keep looking at the new Knoppix distributions , I see some interesting additions , it uses a newer Linux kernal , and there are newer verisons of existing packages .

However , I do not see a fortran compiler listed. So, I go back and use 5.3.1 , mostly because it has gfortran .