UNFold, you know like in folders but also when things are unfolding in front of your eyes, is a web resource discovery tool. Unlike more traditional directory bruteforcers, UNFold supports both resource enumeration through dictionaries but also active spidering for maximum effect during the discovery process.
The following list of blog posts will help you get started with Unfold:
Even More Awesome Features
This tool includes many more awesome features you may not about.