Grunt is a task-based command line build tool for JavaScript projects. It has the following predefined tasks that you can use in your project: Concatenate files, Validate files with JSHint, Minify files with UglifyJS, Run unit tests with nodeunit and etc. In addition to the built-in tasks, you can create your own tasks. Don’t like a built-in task’s default behavior? Override it.

While Node.js was designed to support highly-concurrent asynchronous-IO-driven web servers, it was clearly NOT designed to make command-line build tools. But none of that matters, because grunt works. Grunt is available as an npm module. IT is licensed under the MIT license.

Requirements: JavaScript framework
Demo: http://gruntjs.com/
License: MIT License