The only ones I use you might think of as command line tools. top. Apache’s monitoring tools via Lynx. Etc. What I like about them is that they’re information-

The only ones I use you might think of as command line tools. top. Apache’s monitoring tools via Lynx. Etc. What I like about them is that they’re information-dense and extremely performant; and a bit more discoverable than a CLI. What I dislike about them is that they tend to be poor at surfacing or highlighting important information or providing context. And they’re far less discoverable than a modern GUI.