ram

https://github.com/davidrichards/ram

Ram is an asset packaging library for any type of web project. \ It was originalyl adapted from the excellent Jammit gem, but without any Rails dependencies or tie ins. This provides both the CSS and JavaScript concatenation and compression that you'd expect, as well as YUI Compressor and Closure Compiler compatibility, ahead-of-time gzipping, built-in JavaScript template support, and optional Data-URI / MHTML image embedding.