Masonry
Constrain Tools
https://github.com/desandro/masonry
EFCircularSlider
Circular Slider
https://github.com/eliotfowler/EFCircularSlider
DoActionSheet
An replacement for UIActionSheet
https://github.com/donobono/DoActionSheet
DateTools
Dates and times made easy in Objective-C
https://github.com/MatthewYork/DateTools
DQAlertView
The best iOS customisable AlertView
https://github.com/dinhquan/DQAlertView
BOString
Create NSAttributedString like a boss
https://github.com/kovpas/BOString
APNumberPad
Full clone of iOS number keyboard with customisable function button
https://github.com/podkovyrin/APNumberPad
AFNetworking
A delightful iOS and OS X networking framework
https://github.com/AFNetworking/AFNetworking
AMPopTip
An animated tooltip
https://github.com/andreamazz/AMPopTip
Bolts-iOS
Bolts is a collection of low-level libraries designed to make developing mobile apps easier.
https://github.com/BoltsFramework/Bolts-iOS
iCarousel
A simple, highly customisable, data-driven 3D carousel for iOS and Mac OS.
https://github.com/nicklockwood/iCarousel
RMUniversalAlert
Wrapper class for UIAlertView / UIActionSheet / UIAlertController for targeting all iOS versions.
https://github.com/ryanmaxwell/RMUniversalAlert
RESideMenu
supports both sides (left & right) menu.
https://github.com/romaonthego/RESideMenu
YETICharacterLabel
UILabel subclass to perform text effects
https://github.com/android1989/YetiCharacterLabelExample
MGMushParser
Create an NSAttributedString from an NSString with lightweight Mush markup.
https://github.com/sobri909/MGMushParser
JSONModel
Magical Data Modelling Framework for JSON.
https://github.com/icanzilb/JSONModel
FontAwesomeKit
Icon font library for iOS.
https://github.com/PrideChung/FontAwesomeKit
NimbusKit
The iOS libraries that power iOS apps around the world.