不求多，但求精。
一、特殊需求
多层列表
https://github.com/Augustyniak/RATreeView
二、UI控件
下拉刷新
https://github.com/CoderMJLee/MJRefresh
https://github.com/samvermette/SVPullToRefresh
菜单
https://github.com/romaonthego/RESideMenu
角标
https://github.com/cwRichardKim/RKNotificationHub
https://github.com/JaviSoto/JSBadgeView
顶部弹窗
https://github.com/cruffenach/CRToast
顶部菜单
https://github.com/xmartlabs/XLPagerTabStrip
底部菜单(Tab)
https://github.com/Ramotion/animated-tab-bar
轮播控件
https://github.com/gsdios/SDCycleScrollView
图表控件
https://github.com/danielgindi/Charts
日历控件
https://github.com/jonathantribouharet/JTCalendar
https://github.com/WenchaoD/FSCalendar
https://github.com/patchthecode/JTAppleCalendar
一套控件
https://github.com/Grouper/FlatUIKit
消息视图
https://github.com/jessesquires/JSQMessagesViewController
进度提示
https://github.com/jdg/MBProgressHUD
https://github.com/danielamitay/DACircularProgress
星级评定条
https://github.com/erndev/EDStarRating
侧滑菜单
https://github.com/ViewDeck/ViewDeck
分段控件(Segment)
https://github.com/samvermette/SVSegmentedControl
https://github.com/u10int/URBSegmentedControl
https://github.com/HeshamMegid/HMSegmentedControl
开关
https://github.com/twotoasters/TTSwitch
三、网络相关
图片缓存及加载
https://github.com/rs/SDWebImage
HTTP网络框架
https://github.com/AFNetworking/AFNetworking
JSON解析(第三方)
https://github.com/johnezang/JSONKit
字典与模型转换
https://github.com/CoderMJLee/MJExtension
四、数据库
五、动画效果
波动效果
https://github.com/inFullMobile/WobbleView
跑马灯
https://github.com/cbpowell/MarqueeLabel
六、图片、视频处理
https://github.com/BradLarson/GPUImage