Dash - An offline documentation browser for MacOS. These days, I found that online searches is a bit wasteful–I never have time to configure specific site- search in Alfred. Kinda useful for languages like Go, Common Lisp and Clojure.

VMs - Specifically with Parallels Desktop. I'm a bit fed up with MacOS packagers. I prefer having a small VM, where things are at least consistent. And no risks of NPM contaminations.