- NSArchiver
- NSArray
- NSMutableArray
- NSAssertionHandler
- NSAttributedString
- NSMutableAttributedString
- NSAutoreleasePool
- NSBundle
- NSCalendarDate
- NSCharacterSet
- NSMutableCharacterSet
- NSCoder
- NSConditionLock
- NSConnection
- NSCountedSet
- NSData
- NSMutableData
- NSDate
- NSDateFormatter
- NSDecimalNumber
- NSDecimalNumberHandler
- NSDeserializer
- NSDictionary
- NSMutableDictionary
- NSDirectoryEnumerator
- NSDistantObject
- NSDistributedLock
- NSEnumerator
- NSException
- NSFileHandle
- NSFileManager
- NSFormatter
- NSHost
- NSInvocation
- NSLock
- NSMethodSignature
- NSNotificationCenter
- NSNotificationQueue
- NSNumber
- NSNumberFormatter
- NSObject
- NSPipe
- NSPort
- NSPortCoder
- NSPortMessage
- NSPortNameServer
- NSPPL
- NSProcessInfo
- NSProtocolChecker
- NSProxy
- NSRecursiveLock
- NSRunLoop
- NSScanner
- NSSerializer
- NSSet
- NSMutableSet
- NSString
- NSMutableString
- NSTask
- NSThread
- NSTimer
- NSTimeZone
- NSTimeZoneDetail
- NSUnarchiver
- NSUserDefaults
- NSValue