I like it, but why not use something like htop? [1] Perhaps it's not entirely comparable, but you do not need to open any extra ports or run any extra processes. It looks really nice though! [1] https://en.wikipedia.org/wiki/Htop
I love htop too, but the great thing about scout_realtime is the couple minutes of context provided the charts. Sometimes, nothing beats seeing a chart to quickly see what's going on.
http://www.ragingmenace.com/software/menumeters/index.html
It's always instantly clear when something like iTunes or a Chrome helper starts eating up 105% CPU, and provides quick access to force quitting it. :)
Screenshot: http://i.imgur.com/sEtkR9p.png