What are youe favourite Linux productivity tools?

Terminal ;)

Terminal and shortcuts. :)

@Notebookdeviant that comment makes me want to establish an SSH connection with you. :D

Emacs Evil mode with Orgmode for TODO and general outlining, agendas, time logging, etc.

VIM with NERD tree etc or Atom for editing Code.

Inkscape for Vector graphics / Svg production
GIMP for Layout Design and

GRAPH Paper and Ink for Wire framing / sketching out layouts.

htop and needrestart

valgrind + man

Sudo

Terminal and geany