Wconky is a free, fully customizable software desktop system monitor for the Windows system.
Wconky preview:
Theme editor preview:
Please, configure your "config.xml" file with included editor and be SURE that everything is filled (and with a valid data/paths) because when I wrote this code, I did not handle any errors (it was just a project to pass the course and it was supposed to just work)...
The project is quite old and therefore abandoned (I am ashamed to look at this code after years), but the binary works. Tested on Intel and nVidia cards.