What other dev tools do you use?

Hey everyone,

Recently started using Atom. Was wondering what other dev tools people here use in their personal tech stack and how they find new tools to try out?

Gimp for Photo manipulation and Figma for design stuff beside Atom.

Now that is a big question with many dimensions.
Windows/Linux/Mac?
Cloud services?

On Ubuntu I use dozens of tools … still counting … and the principle is not to get too locked into any single tool.
The common ground is command line for linking tools and services together in a chain. Atom process-palette is great for that.