less.js is the next evolution of LESS, eventually, it will become LESS 2.0. less.js is a complete rewrite of LESS in JavaScript, and will be able to run directly in the browser, as well as on the server, with node.js.

where do I get it?

The latest builds are in the dist/ folder.

synopsis

in node.js

var less = require('less');

less.render(".class { width: 10px * 2 }", function (e, css) {
    sys.puts(css); // .class { width: 20px }
});

via the command-line (requires node)

bin/lessc style.less

in the browser

Get the pre-built version from the dist/ folder, and include it as such:

<link rel="stylesheet/less" href="main.less" type="text/css">
<script src="less.js" type="text/javascript"></script>

Note the rel="stylesheet/less" for all stylesheets you want to parse with LESS.

installation

In node:

$ npm install less