CLutils

CLutils is a collection of functions mostly tailored for Mac OS X and iPhone development, with some cross-platform exceptions. Here's a quick breakdown.

cl_debug (cross platform)
Light-weight macro library for printf debugging (see http://cubelogic.org/cl_debug ) 

CLCarbon (Mac OS X)
C utilities with Carbon dependencies

CLChessUtils (cross platform)
C utilities for chess applications

CLCocoa (Mac OS X)
Objective-C utilities, with some C wrappers

CLcutils (cross platform)
C and C++ utilities typically requiring clib or STL.

CLFoundation (Mac OS X and iOS)
Objective-C routines, with dependencies on Foundation only. 

CLIPhone (iOS)
Objective-C routines with UIKit dependencies.

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BSD License