To pre-compile LESS into CSS you can use
* Run less.js using Node.js : By using the Node.js JavaScript framework you can run the less.js script outside the browser
* Use lessphp : For the implementation of the LESS compiler written in PHP, lessphp is used
* Use online Compiler : Use online compiler for quick compilation of LESS code without installing a compiler
* Less. app (for Mac users) : Less.app is a free tool for Mac users, this tool auto compiles them into CSS files
