(Original post 2015-10-17; updated 2017-01-18)
As this is my first post I will keep things simple. Unless otherwise specified, I will be using the following as my default tools.
Editors/IDE/Cool things ViM (pretty much everything code related) Atom (Markdown, text files, and the like) Jupyter (IPython, IJulia) Languages [toolchains] C/C++ [g++, icc] CUDA/OpenCL [nvcc, icc] Python MATLAB Julia Mathematica Bash/Zsh English (occasionally) OS Arch Linux CentOS 7 OS X 10.