iPhone Twitter client

Presentation by Luis de la Rosa at NSCoderNightDC from 4/14/2009 on using the TouchJSON library in your apps, including both slides and sample code. Luis is a committer on the TouchJSON project.

FunctionalKit is an attempt to use functional paradigms in Objective-C. It is a set of low level functional types & APIs. It contains types such as either, option, etc. that allow your to write correct, clean, tight, succinct and (where possible) typesafe code. It also provides more advanced concepts such as lifting functions into monads.

A high-level cryptography API for Mac OS X and iPhone

This demonstrates a simple snippet of code which uses OpenGL ES on the iPhone to create a CoverFlow-like effect.

ParseKit is a Mac OS X Framework written by Todd Ditchendorf in Objective-C 2.0 and released under the MIT Open Source License. ParseKit is suitable for use on Mac OS X Leopard, Snow Leopard or iPhone OS. ParseKit is an Objective-C implementation of the tools described in "Building Parsers with Java" by Steven John Metsker. ParseKit includes additional features beyond the designs from the book and also some changes to match common Cocoa/Objective-C conventions. These changes are relatively superficial, however, and Metsker's book is the best documentation available for ParseKit.

The ParseKit Framework offers 3 basic services of general interest to Cocoa developers:

- String Tokenization via the Objective-C PKTokenizer and PKToken classes.
- High-Level Language Parsing via Objective-C - An Objective-C parser-building API (the PKParser class and sublcasses).
- Objective-C Parser Generation via Grammars - Generate an Objective-C parser for your custom language using a BNF-style grammar syntax (similar to yacc or ANTLR). While parsing, the parser will provide callbacks to your Objective-C code.