KISS is a powerful content management system build on top of php framework (also named KISS) using EXT JS.
It’s first aim is to be very simple and intuitive to use and is adapted to every web site I make so it can reflect the site needs, and never, but never is the site who reflects the cms abilities.
That said, KISS is not meant to be a ready to use CMS (it can be) but provides a solid base to build a tailor made CMS for each site
take a look at this simple demo, it’s not packed with features but you can get the general feeling