https://medium.com/ios-os-x-development/libraries-used-in-the-top-100-ios-apps-5b845ad927b7
67 facebook-ios-sdk
48 Bolts-iOS
39 AFNetworking
38 Google-Mobile-Ads-SDK
38 Reachability (Apple)
37 Crashlytics
31 Flurry-iOS-SDK
30 CocoaPods
29 GoogleConversionTracking
26 SDWebImage
25 Fabric
25 mopub-ios-sdk
23 Unity
22 AdColony
20 GoogleAnalytics
19 GTMLogger
18 comScore-iOS-SDK
18 google-plus-ios
17 OpenUDID
17 CocoaLumberjack
16 Adjust
16 ChartboostSDK
16 MBProgressHUD
15 OpenInChrome
15 TTTAttributedLabel
14 HockeySDK
14 google-breakpad
13 CocoaAsyncSocket
13 AppLovin
13 SBJson
12 FMDB
12 GLImageProcessing (Apple Sample)
12 pop
12 SSZipArchive
12 Appirater
11 BPXLUUIDHandler
11 VungleSDK-iOS
11 Protobuf
11 UnityAds
10 SSKeychain
10 KeychainItemWrapper
10 PLCrashReporter
10 secureudid
10 libPhoneNumber-iOS
10 oauthconsumer
9 InMobiSDK
9 MobileAppTracker
9 TapjoySDK
9 TrustDefender Mobile
9 iRate
8 OnePasswordExtension
8 SFHFKeychainUtils
8 Tweaks
8 cocos2d
8 GPUImage
8 KVOController
8 Nimbus
8 google-cast-sdk
7 HPGrowingTextView
7 Localytics
7 thrift
7 FormatterKit
7 Kochava
7 Mantle
7 Mixpanel
7 AppNexusSDK
7 JSONKit
7 NJKWebViewProgress
7 cocos2d-x
7 TouchJSON
6 SupersonicAds
6 TPKeyboardAvoiding
6 SponsorPaySDK
6 PhotoScroller (Apple)
6 TwitterKit
6 SpeechKit
6 ReactiveCocoa
6 UICKeyChainStore
6 WeChatSDK
6 XMLDictionary
5 SVProgressHUD
5 SocketRocket
5 libextobjc
5 Shimmer
5 TransitionKit
5 AsyncDisplayKit
5 SnowplowTracker
5 aws-sdk-ios
5 SVPullToRefresh
5 MMWormhole
5 Masonry
5 UIAlertView+Blocks
5 FLAnimatedImage
5 AppsFlyer-SDK
5 CardIO
5 TMCache
5 youtube-ios-player-helper
4 Weibo
4 Parse
4 MagicalRecord
4 GoogleMaps
4 GoogleAds-IMA-iOS-SDK
4 Braintree
4 PSPDFTextView
4 FXBlurView
4 ASIHTTPRequest
출처: http://gopen.tistory.com/7 [1001 Knowledge]