Some popular Objective-c open source repositories:

NJKWebViewProgress is a progress interface library for UIWebView. Currently, UIWebView doesn't have official progress interface. You can implement progress bar for your in-app browser using this module.

EarlGrey is a native iOS UI automation test framework that enables you to write clear, concise tests.

The ResearchKit™ framework is an open source software framework that makes it easy to create apps for medical research or for other research projects.

FormatterKit is a collection of well-crafted NSFormatter subclasses for things like units of information, distance, and relative time intervals. Each formatter abstracts away the complex business logic of their respective domain, so that you can focus on the more important aspects of your application.

MLeaksFinder helps you find memory leaks in your iOS apps at develop time. It can automatically find leaks in UIView and UIViewController objects, hit assertion and print the View-ViewController stack when leaks happening. You can also extend it to find leaks in other kinds of objects.

XLForm is the most flexible and powerful iOS library to create dynamic table-view forms. The goal of the library is to get the same power of hand-made forms but spending 1/10 of the time.

一款天气预报的应用,点击查看 最美应用 介绍。视频 优酷 或者 YouTube. Ok in case you didn't get, it is A weather forecast application, click to see the most beautiful presentation applications. Youku video or YouTube (as per google translate).

SVProgressHUD is a clean and easy-to-use HUD meant to display the progress of an ongoing task on iOS and tvOS.

Everyone tries to implement a cache at some point in their app’s lifecycle, and this is ours. SPTPersistentCache is a library that allows people to cache NSData with time to live (TTL) values and semantics for disk management.

An iOS/OSX bridge for sending messages between Obj-C and JavaScript in UIWebViews/WebViews.

Injection for Xcode is an Xcode plugin (available via Alcatraz) or AppCode that dynamically inserts new Swift / Objective-C code into a running app in order to speed up your build process. It does this without making any changes to your project.

Chameleon is a lightweight, yet powerful, color framework for iOS (Objective-C & Swift). It is built on the idea that software applications should function effortlessly while simultaneously maintaining their beautiful interfaces.

这份学习资料是为 iOS 初学者所准备的, 旨在帮助 iOS 初学者们快速找到适合自己的学习资料, 节省他们搜索资料的时间, 使他们更好的规划好自己的 iOS 学习路线, 更快的入门, 更准确的定位的目前所处的位置.

In case you didn't get, This is for the iOS beginners learning materials prepared to help iOS beginners to quickly find their own learning materials, to save time they search for information, enabling them to better plan their own learning path iOS, faster entry, the current location more accurate targeting.

Xcode plugin for sort selected area in text area

A curated list of awesome iOS frameworks, libraries, tutorials, Xcode plugins, components and much more. The list is divided into categories such as Frameworks, Components, Testing and others, open source projects, free and paid services. There is no pre-established order of items in each category, the order is for contribution. If you want to contribute, please read the guide.

This Xcode plugin disables the Fix Issue functionality in Xcode. This way, none of your team members can click this button by mistake and might end up revoking existing certificates and provisioning profiles.

FlatUIKit was originally written by Jack Flintermann in March of 2013, before iOS7 had even come out. The idea was to give a nice flat look to some of the native iOS components. Then iOS7 came along and introduced a decent API to do most of these tasks.

An easy way to unmarshall a Dictionary of attributes (which came from JSON, XML or just a NSDictionary) into a Class and vice versa.

The most flexible and powerful way to build a form on iOS.

Form came out from our need to have a form that could share logic between our iOS apps and our web clients. We found that JSON was the best way to achieve this.

Jazz Hands is a simple keyframe-based animation framework for UIKit. Animations can be controlled via gestures, scroll views, KVO, or ReactiveCocoa.

Canvas is a project to simplify iOS development for both designers and developers. It had been difficult for designers to get hands on building the product with the lack of objective-c and Xcode experience, and a hard time for developer to use reasonable amount of time and lines of code just to achieve really simple effects.

Popping is a collection of animation examples for iOS apps. Almost all of them were created using the Facebook pop animation engine. It should inspire you to create some great looking UIs to delight people who use your app.

PonyDebugger is a remote debugging toolset. It is a client library and gateway server combination that uses Chrome Developer Tools on your browser to debug your application's network traffic and managed object contexts.

DateTools was written to streamline date and time handling in Objective-C. Classes and concepts from other languages served as an inspiration for DateTools, especially the DateTime structure and Time Period Library for .NET. Through these classes and others, DateTools removes the boilerplate required to access date components, handles more nuanced date comparisons, and serves as the foundation for entirely new concepts like Time Periods and their collections.

KIF, which stands for Keep It Functional, is an iOS integration test framework. It allows for easy automation of iOS apps by leveraging the accessibility attributes that the OS makes available for those with visual disabilities.

Drag the included Colours.h and Colours.m files into your project. They are located in the top-level directory. You can see a demo of how to use these with the included Xcode project as well.

CRToast is a library that allows you to easily create notifications that appear on top of or by pushing out the status bar or navigation bar. CRToast was originally based on CWStatusBarNotification.

Reader is an open source PDF reader code for iOS developers struggling with wrangling PDF files onto iOS device screens.

Just a few code snippets.

An UIAlertView replacement with block syntax and fancy transition styles

A Xcode plugin to automatically generate @2x, @1x image from @3x image for you, or upscale to @3x from @2x. As easy as you press Ctrl+Shift+A, and DONE!

SVGKit is a Cocoa framework for rendering SVG files natively: it's fast and powerful.

Retain cycles are one of the most common ways of creating memory leaks. It's incredibly easy to create a retain cycle, and tends to be hard to spot it. The goal of FBRetainCycleDetector is to help find retain cycles at runtime.

An iOS library providing developer tools for browsing objects in memory over time, using FBAllocationTracker and FBRetainCycleDetector.

Some non Objective-C libraries but equally useful for iOS Developers.

The Git interface you've been missing all your life has finally arrived.

fastlane is a tool for iOS and Android developers to automate tedious tasks like generating screenshots, dealing with provisioning profiles and releasing your application.