Mobiwan is a project mainly written in JAVASCRIPT and SHELL, it's free.
Jekyll Template Project for Desktop Friendly Mobile Site Layout
This is a Jekyll Site template that is designed to enable you to create a simple desktop site that also looks good on mobile devices. The main piece of work that has gone on here is around customization of a menu that basically aligns to the top of the page for desktop display.
When the screen hits a certain width, the menu will disappear and will be activated by a "Menu" button. This reveals the menu in a more mobile-like navigation menu.