Let’s list off today some sites worth checking out for iPhone/Mac programming open source goodies should there not — heaven forfend! — be anything particularly appropriate already mentioned in the annals of this humble journal. Hard though that is to imagine of course!

Open Source iPhone Directory
Open Source iPhone Software
[EDIT: 35 Open Source iPhone App Store Apps!]
[EDIT: GourmetApps!]
Useful open source libraries for IPhone Development
More useful open source libraries for iPhone development
Open Source iPhone Applications
Open Source iPhone Apps
Matt Legend Gemmell Cocoa Source Code
“iphone” projects on Google Code
“iphone” projects on SourceForge
“iphone” projects on GitHub
“iphone” projects on FreshMeat
MacForge.net
Native OS X Applications (w/ source)
[EDIT: BYU Open Source List!]
[EDIT: Battle for Wesnoth!]
[EDIT: open.iphonedev.com, @openiphonedev!]

And for a vast list of iPhone-devoted not only open source projects but everything from LinkedIn groups to useful blogs (why, it even lists us! How sweet!), the pithily named