Apple has a LOT of stuff in their frameworks, but there’s always something else you need. You always want more. It’s never enough that those boys and girls in Cupertino are working their fingers to the bone to provide you with development tools. FINE.
If you need to go out for burgers when you’re not getting steak at home, here are some of my favorite burger joints....
OmniGroup: Subclasses and Categories for all your favorite Cocoa objects. There’s more stuff there than I care to discuss. Seriously, loads and loads of it. Well tested and rock solid.
http://www.omnigroup.com/developer/
iMediaBrowser: Need a media browser for integrating with those pesky iLife apps. This one is just like the one used in the Apple apps (which they refuse to share - tsk tsk).
http://imedia.karelia.com
Karelia: Useful bits and bobs. I liken this site to that drawer below the sharp knifes but above the tea towels and glad wrap. The one with the string, glue, strips of velcro, a D-cell battery and other crap that you can never find when you are looking for it, but can always find when you’re not. BIG kudos to these guys on all their iMediaBrowser work.
http://cocoa.karelia.com/
Aquatic Prime: Some kind of registration framework. I haven’t actually used it, but I have drawn on some of their classes for simple tools. There’s a really cool NSData Encryption category. Niiiiiice...... (insert Borat accent here).
http://aquaticmac.com/
Infinite Loop: Crash Reporter that can send your crash reports to a designated email address. You get the stack trace and console log and everything (actually just the stack trace and console log).
http://www.infinite-loop.dk/developer/
Rainer Brockerhoff: RBSplitView is a great alternative to NSSplitView (you know, the thing that separates your inbox list from the mail preview). It’s like Apple’s own but on serious roids.
http://www.brockerhoff.net/
Matt ‘Legend’ Gemmell: A few cool bits and pieces including a HUD window and a much prettier NSBox.
http://mattgemmell.com/source/
PSM Tab Bar Control: Safari style tabs (with more features). Used in Adium.
http://www.positivespinmedia.com/dev/PSMTabBarControl.html
MUPhotoView (Blake Seely): iPhoto style photo grid (used in iMediaBrowser)
http://blakeseely.com/subversion.html