Dash
Offline docmentation viewer with magical search
https://kapeli.com/dash
Ag
Fast code search
https://github.com/ggreer/the_silver_searcher
Sublime Text
Cross-platform text editor
https://www.sublimetext.com/
Conda
Python installs and environments
http://conda.pydata.org/docs/
Fish
The friendly interactive shell
http://fishshell.com/
Pyped
Use Python along with shell commands https://github.com/ksamuel/Pyped