I actually am interested in seeing resumes that list more than just languages. E.g. if I see something like this Linux (GNU textutils, LDAP, ...) C/C++ (STL, B

I actually am interested in seeing resumes that list more than just languages. E.g. if I see something like this Linux (GNU textutils, LDAP, ...) C/C++ (STL, Boost, gdb Archer, Cint) Emacs/Elisp (Org-mode, ESS, IPython, Haskell-mode) Python (Numpy, Scipy, rpy2, Matplotlib, Django) R (ggplot2, rgl, etc.) ... I'm more confident that they actually know the stack of technologies related to that language. I'm not saying it's worth it to kitchen sink it, but rather that if all they're using is the most vanilla editor and environment, then they probably haven't learned the importance of tools.