Ingredients is a documentation viewer for Cocoa. It's designed to replace the one that comes with Xcode (try searching for "NSStr" and count how many items are above "NSString").
Requires the latest version of OS X. We may require a major OS update on a point release, depending on how juicy the new developer features are. For now though it looks like you're safe, since Apple is totally ignoring Mac OS X.
We do aggressive caching, so make sure you have lots of RAM (usage seems to be around 100MB at this point).
You will need to have the BWToolkit IB plugin installed. You can get it at http://brandonwalkin.com/bwtoolkit/.
Ingredients won't build using Xcode 4 because Apple broke IB plugins.
If you see lots of warnings, you know it's built correctly.
Ingredients is licenced under the "Fuck copyright - I don't have the money to sue you anyway" licence :)