Visual Studio Code. I used it before I was at MSFT but I just love it. Amazing for writing code, managing Azure stuff, and staying organized.
I love Kaleidoscope for doing git diffs and merge conflicts.
Firefox Stable for browsing the Interwebs.
I write my articles in MacDown for a simple markdown based editor
Spotify 24/7
I have a little Microsoft Surface Go that I travel with now. Great for watching videos, writing a little Node.js and playing old games like Dungeon Keeper II.
iTerm2 w/ fish. I usually work with bash since I teach a lot but man I love fish shell.
Dank Mono font and @Sarah Drasner's Night Owl theme for VSCode.