# The Big Box of HTML ## Testing Tools - [.resizr](http://resizr.co/) - Responsive website testing tool - ## Packaging Tools - [NW.js](http://nwjs.io/) - Previously known as `node-webkit`, this tool lets you package your HTML / CSS / JS app into a bundle (native for your target desktop platform) with Blink & Node.JS. - [Electron](http://electron.atom.io/) - An alternative to the above. Looks to be smaller, but I don't really know how it works.