The Design of LLVM By Chris Lattner

QuincyKit - Live management of your crash reports for Mac OS X and iOS.

Matt Gemmell - API Design

A little utility to print .xcdatamodel files as text, so git-diff can show changes in the data model

Bret Victor - Inventing on Principle

"Fix Radar or GTFO"

Cocoa Controls - Custom UI Controls for iOS and Mac OS X

PLWeakCompatibility - Compatibility stubs to enable use of weak references with ARC on older OSes

Xcode 4.3.2 via App Store (80 MB Delta Update)

lixingfu: Keep calm and hack on…
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lixingfu:

Keep calm and hack on…

Source: kukool