Ask HN: What are your tools of the trade?

Once in a while, it's fun to share tools of the trade and also read what other folks use in their day-to-day. I sometimes read https://usesthis.com/ to do just that.

I posted my setup here along with what I was using back in 2009: https://www.surly.dev/articles/tools-of-the-trade

What's your setup?