Less is Leaner css. Less extends css by adding: variables, mixins, operations and nested rules.”

Kromě používání proměnných v CSS vám Less dá do rukou i další velmi chytré pomůcky, to vše implementovatelné na váš stávající kód. Rozhodně mrkněte na jejich stránku, i když nepoužíváte Ruby ani Railsy.

Sprockets is a Ruby library that preprocesses and concatenates JavaScript source files. It takes any number of source files and preprocesses them line-by-line in order to build a single concatenation. Specially formatted lines act as directives to the Sprockets preprocessor, telling it to require the contents of another file or library first or to provide a set of asset files (such as images or stylesheets) to the document root. Sprockets attempts to fulfill required dependencies by searching a set of directories called the load path.

It helps you turn messy JavaScript into clean modules for development and a single .js file for deployment.

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