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I've been using Devise for a little while, and I've realized it's built on something else called Warden that handles authentication. What does Devise offer me outside of Warden, because I was considering removing devise and just using Warden.

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I have no freakin' idea what you're asking. – Malfist Nov 3 '11 at 20:14
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Devise extends Warden which involves something called a "Rack" or some such. I'm not a Rubyist so beyond that I've no idea. I think he's wondering if base Warden is find without Devise or if Devise brings something critical to the table. – World Engineer♦ Nov 3 '11 at 20:57

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Warden is the kernel of rack-middleware authentication. Devise is a complete authentication system for rails applications.

Let's take an analogy: Warden is like the Linux kernel, while Devise is like a complete Linux-based operating system such as Debian or Fedora. Or another: Warden is like the engine, while Devise is like the rest of the car.

For more details, please read the respective manuals that you linked to in your question.

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