Lightning fast to setup. Obviously easy to maintain.
Coupled with a collection of plugins for the most popular website functions.
Bundled with: jQuery, HTML5 Boilerplate, KISSMVC(core), RequireJS
Public repository: https://github.com/makesites/kisscms
Extensible
Download plugins for common tasks like connecting to Facebook and detecting mobile screens. More plugins...
Portable
Copy the website folder anywhere and it will work with very few dependencies (PHP5). More features...
Customizable
Modify the website according to your needs and create your own themes/plugins. More help...