Top 10 iOS libraries
For XML-RPC communication you should try this XML-RPC library from eczarny.
A lightweight XML library can be found here by TouchCode.
I guess it’s not necessary to introduce Unity, one of the most awesome graphical library.
A small but really nice library that does pull-to-refresh on tables from Leah Culver.
ZBar has an awesome minimal but perfect barcode scanner library – and it’s open source.
RedLaser’s barcode scanner is also very good, but you have to pay a little for it.
JSONKit is a well performed JSON parser library.
UITableKit is a nice helper library for working with tables.