@gregorni
Editor: #neovim or Pe
Multiplexer: still figuring out: only recently realised they're useful.
Package manager: #nixPackageManager / #haikuOS pkgman
Shell: bash (sometimes zsh, never got around to finding out the difference)
Language: #haskell, #rust, #rubylang, #cpp, whatever else tickles my fancy.
Containers: none (most recently docker)
Command runner: don't you mean shell?
Terminal emulator: the default ones from #CinnamonDesktop and #haikuOS