At work (I'm a physics/mathematics guy developing quantum optical simulations): Fortran 2003/2008 C++ LaTeX Sage Mathematica Haskell (My initial experimen

At work (I'm a physics/mathematics guy developing quantum optical simulations): Fortran 2003/2008 C++ LaTeX Sage Mathematica Haskell (My initial experiments look promising; ghc+llvm has consistently beaten gcc and gfortran when doing RK4 integration of complicated functions. I'm currently testing array performance with REPA.) Emacs Dislin (Looking for a replacement, since it's a real pain to use) Charm++ (Looks promising, but also seems hard to use.) MPI At home: Haskell