Living front end style guides can be quite powerful if done right. They help to decrease the amount of UI waste that is generated by minimizing the need for detailing similar screens over and over and relying instead on reusable elements. They are tools that could potentially work with wireframes, by placing common emerging UI elements and patterns into one shared place.
Lets you easily build a custom version of jQuery that just includes the modules you need instead of loading the entire library.
The experience of your web content on mobile operates very differently than what users experience on the desktop. The Chrome DevTools allow you to inspect, debug, and analyze the on-device experience with the full suite of tools you're used to, meaning you can use the tools in your desktop Chrome to debug a page on mobile Chrome.
animate.css is a bunch of cool, fun, and cross-browser animations for you to use in your projects. Great for emphasis, home pages, sliders, and general just-add-water-awesomeness.
An ever growing collection of game icons. Dozen new symbols are added weekly and organized in intuitive categories to offer both a comfy browsing and let room for serendipity. Easy styling thanks to SVG. All the images are downloadable in a vector format, so you can easily tweak colors, rotation and adjust effects like blur, bevels or shadows.
A jquery plugin to transfer your DOM into 2d-physical objects.
A tidy collection of jQuery plugins.
A clever tool. Enter a URL to view how the layout presents itself on the desktop, and in tablets and mobile phones. Actually triggers media queries.