Style iOS apps with a stylesheet, similar to CSS

A drop-in replacement for UILabel that supports NSAttributedStrings

Mock objects for Objective-C

A drop-in replacement for UILabel that supports attributes, data detectors, links, and more

A Cocoa library to extend the Objective-C programming language.

A type-safe HTTP client for Android and the JVM

The Objective-C HTTP library that Apple should have created, seriously.

Hack to get the iPhone Simulator to run on the command line

RestKit is a framework for consuming and modeling RESTful web resources on iOS and OS X

Extremely simple FFT library written in C++ that uses the Cooley-Tukey algorithm for real numbers. Eschews stl complex for a more simplified outward facing API.

Library for dealing with money and currency conversion

ObjectiveFlickr, a Flickr API framework for Objective-C

Set of tools and utilities (command line, GUI, Mac Service) to transform NIB files for the iPhone into Objective-C code files

WebKit plug-in to prevent automatic loading of Adobe Flash content

A Ruby Library for dealing with money and currency conversion.