EightPack is a collection of JavaScript-based command-line tools for web developers. It uses Google V8 as the scripting engine (hence, the name).
EightPack can be built on all major desktop platforms (Windows, Mac OS X, Linux). Binaries for Windows and Mac OS X are available for download.
As of now, EightPack consists of the following tools: JSLint, JSHint, JS Beautifier, JSMin, CSS Beautify, and cssmin.js.
EightPack is an open-source software, distributed and available under MIT License.
For more information, go to its official website: ofilabs.com/eightpack.