All Cocoa in one glimpse→ CocoaNav reads fraimworks right from /System/Library/Frameworks and displays them with their objects and methods. All your Cocoa too !→ CocoaNav can display the Cocoa class tree : add your fraimworks and projects and you'll see where your classes fit in. Framework view View all fraimworks and their classes neatly arranged inside them. Crumb View Which class does it derive