I'm looking for a system monitoring tool, preferably a free one. I don't care if it's an actual app or sits in my terminal.
Activity Monitor doesn't give me all the information I want at once.
iStat Menus definitely seems like a slick option, but that costs $. I use iTerm2/zsh/oh-my-zsh; I haven't been able to find any sort of plugin for that, which is disappointing.