What is GKrellM?
GKrellM is a single process stack of system monitors which supports applying themes to match its appearance to your window manager, Gtk, or any other theme.
Comments and Reviews
Said about GKrellM as an alternative
I've used GKrellM for years in Linux. Very simple to set up and displays the info I like to keep an eye on. I didn't realise it's available on Windows too.
Works flawlessly out of the box, while being nice to look at as well.
Cross platform, Open source and Configurable in a user-friendly way, Definitely the best alternative in my book