A wrapper (written in Java) for the less compiler, to be used on Windows, because those poor souls don't have the wonderful less app we do on Mac.
How to use?
As it is a wrapper, you NEED a working lessc compiler on your machine. For Windows, take a look at http://blog.dotsmart.net/2010/11/26/running-the-less-js-command-line-compiler-on-windows/. There is a zip file there you can extract in your system32 folder (or wherever your PATH is looking) to use it.