Devon’s Cocoa Blog

http://katidev.com/blog/2008/07/24/simple-nsviewcontroller-sample-projects/

Not really Cocoa APIs but useful none the less.
http://www.cimgf.com/2008/05/03/cocoa-tutorial-file-copy-with-progress-indicator/

Uli Kusterer writes:

“Sometimes, you need to draw text with more control than an NSTextField or NSTextView will let you do, and sometimes you need better performance than the NSStringDrawing category will provide. And maybe you need to draw text into a CGContext or even inside a Carbon application.

You may be thinking about CoreText right now, and how unfortunate it is that you still have to maintain compatibility with Mac OS X 10.4 “Tiger”, but there’s an easier way:”

http://www.zathras.de/angelweb/blog-cocoa-text-system-everywhere.htm

In this episode of Late Night Cocoa Scotty interviews Jesse Grosjean of Hog Bay Software about Plug-In API architectures and look at Jesse’s Blocks Framework.

Thanks Scotty and Jesse for this interview. Pretty much confirmed my ideas about how to create a plugin architecture but also gave me some new ideas like allowing plugins to be extended by other plugins as well.
Late Night Cocoa
Plugin API article
Apple Docs for loading code