# IT:AD:CSS:LESS # * [[../|(UP)]] {{indexmenu>.#2|nsort tsort}} Whereas SASS is a *server* side CSS Preprocessing language, LESS is a javascript based *client* side preprocessor. That said, it can also be run on the server: * [[IT/AD/Web/CSS/LESS/HowTo/Install/LESS/Server/Side]] Used by: * Twitter's [[IT/Backbone/]], so it ain't going anywhere soon. * Though note that Bootstrap was ported to SASS: [http://thesassway.com/projects/sass-twitter-bootstrap](http://thesassway.com/projects/sass-twitter-bootstrap) ## Resources ## * [http://lesscss.org/](http://lesscss.org/) * [http://coding.smashingmagazine.com/2011/09/09/an-introduction-to-less-and-comparison-to-sass/](http://coding.smashingmagazine.com/2011/09/09/an-introduction-to-less-and-comparison-to-sass/)