Kushagra Gour introduces Web Maker, a browser extension for front-end developers needing a blazing-fast, offline web playground.
Often the key to understanding complex things is to understand their simpler parts first. SnappySnippet is a tool that can help you with that.
Codepen has become a vast repository of some of the best in front-end UI thinking. Sarah has put together a short list of handy snippets from Codepen.io