I'm doing iPhone programming after 10+ years as a Java developer.

In the Java world, I'm accustomed to using 3rd party libraries for just about everything, from entire frameworks like Spring to small things like the apache commons utilities.

Are there similar things available for iPhone development? Where do I find them?

I attended the WWDC conference this year but it was of no help in this matter. Apple seems to think everyone writes all their own code from scratch. That seems unlikely.

Thanks.