- NSAffineTransform
- NSArchiver
- NSArray
- NSAssertionHandler
- NSAttributedString
- NSAutoreleasePool
- NSBundle
- NSCachedURLResponse
- NSCalendarDate
- NSCharacterSet
- NSClassDescription
- NSCoder
- NSCondition
- NSConditionLock
- NSConnection
- NSCountedSet
- NSData
- NSDate
- NSDateFormatter
- NSDecimalNumber
- NSDecimalNumberHandler
- NSDeserializer
- NSDictionary
- NSDirectoryEnumerator
- NSDistantObject
- NSDistributedLock
- NSDistributedNotificationCenter
- NSEnumerator
- NSError
- NSException
- NSFileHandle
- NSFileManager
- NSFormatter
- NSHTTPCookie
- NSHTTPCookieStorage
- NSHTTPURLResponse
- NSHashTable
- NSHost
- NSIndexPath
- NSIndexSet
- NSInputStream
- NSInvocation
- NSKeyedArchiver
- NSKeyedUnarchiver
- NSLock
- NSMapTable
- NSMessagePort
- NSMessagePortNameServer
- NSMethodSignature
- NSMutableArray
- NSMutableAttributedString
- NSMutableCharacterSet
- NSMutableData
- NSMutableDictionary
- NSMutableIndexSet
- NSMutableSet
- NSMutableString
- NSMutableURLRequest
- NSNetService
- NSNetServiceBrowser
- NSNotification
- NSNotificationCenter
- NSNotificationQueue
- NSNull
- NSNumber
- NSNumberFormatter
- NSObject
- NSOutputStream
- NSPipe
- NSPointerArray
- NSPointerFunctions
- NSPort
- NSPortCoder
- NSPortMessage
- NSPortNameServer
- NSProcessInfo
- NSPropertyListSerialization
- NSProtocolChecker
- NSProxy
- NSRecursiveLock
- NSRegularExpression
- NSRunLoop
- NSScanner
- NSSerializer
- NSSet
- NSSocketPort
- NSSocketPortNameServer
- NSStream
- NSString
- NSTask
- NSThread
- NSTimeZone
- NSTimeZoneDetail
- NSTimer
- NSURL
- NSURLAuthenticationChallenge
- NSURLCache
- NSURLConnection
- NSURLCredential
- NSURLCredentialStorage
- NSURLDownload
- NSURLHandle
- NSURLProtectionSpace
- NSURLProtocol
- NSURLRequest
- NSURLResponse
- NSUnarchiver
- NSUndoManager
- NSUserDefaults
- NSValue
- NSValueTransformer
- NSXMLDTD
- NSXMLDTDNode
- NSXMLDocument
- NSXMLElement
- NSXMLNode
- NSXMLParser
- NXConstantString
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