Prototyping

• App Story
• Pixate
• @objcio
• @nshipster
• @CocoaPods
• @CocoaPodsFeed
• @RubyMotion
• Programming with Objective-C by Apple
• Object-Oriented Programming with Objective-C by Apple
• Using Swift with Cocoa and Objective C by Apple
• iOS Programming: The Big Nerd Ranch Guide by Christian Keur, Aaron Hillegass, Joe Conway
• Your First iOS App by Ash Furrow
• The Complete Friday Q & A: Volume 1
• 3D Graphics with Scenekit
• awesome-awesomeness
• Open Source apps
• @matteocrippa - A collaborative list of awesome swift resources.
• @Wolg - A curated list of awesome Swift frameworks, libraries and software.
• awesome watchkit apps
• iOS Learning Resources
• awesome-gists - A list of amazing gists (iOS section).
• awesome-ios-ui - A curated list of awesome iOS UI/UX libraries.
• iOS App Development on Medium - Stories and technical tips about building apps for iOS, Apple Watch, and iPad/iPhone
• See the guide

Plugins

• FuzzyAutocompletePlugin - A Xcode 5+ plugin that adds more flexible autocompletion rather than just prefix-matching.
• SCXcodeMiniMap - SCXcodeMiniMap is a plugin that adds a source editor MiniMap to Xcode.
• Show in Github - Xcode plugin to open the GitHub page of the commit of the currently selected line in the editor window.
• BBUFullIssueNavigator - Xcode plugin for showing all issue content in the issue navigator.
• BBUDebuggerTuckAway - Xcode plugin for auto-hiding the debugger once you start typing in the source code editor.
• SCXcodeSwitchExpander - SCXcodeSwitchExpander is a small Xcode plugin that expands switch statements by inserting missing cases.
• VVDocumenter-Xcode - Xcode plug-in which helps you write Javadoc style documents easier.
• XAlign - An amazing Xcode plugin to align regular code. It can align anything by using custom alignment patterns.
• Cocoapods Xcode Plugin - Dependency management helper for your CocoaPods, right in Xcode.
• KSImageNamed-Xcode - Xcode plug-in that provides autocomplete for imageNamed: calls.
• ColorSense-for-Xcode - Plugin for Xcode to make working with colors more visual.
• Backlight-for-XCode - Highlights the current editing line in Xcode
• KPRunEverywhereXcodePlugin - An Xcode plugin to build and run an app across multiple iOS devices with one click.
• RevealPlugin - Plugin for Xcode to integrate the Reveal App to your project automatic.
• AdjustFontSize - Instant font size adjustment with `⌘ +` / `⌘ -`.
• XCActionBar - "Alfred for Xcode" plugin.
• QuickJump - Quick code navigation for Xcode.
• CATweaker - Plugin for creating beautiful CAMediaTimingFunction curve.
• XcodeWay - An Xcode plugin that makes navigating to many places easier (available via Alcatraz).
• GitDiff - Highlights deltas against git repo in Xcode.
• MCLog - Xcode plugin for filtering the console area.
• XToDo - Dialog with list of all TODO, FIXME, ??? and !!! in the project.
• HTYCopyIssue - Makes Copy Xcode Issue Description Easy.
• RTImageAssets - A Xcode plugin to automatically generate all the App icons needed.
• BBUncrustifyPlugin-Xcode - Xcode plugin to format source code using ClangFormat or Uncrustify.
• Aviator - Xcode plugin that brings ⇧⌘T (source/test toggle) from AppCode over to Xcode.
• JumpMarks - Navigate your code files with numbered bookmarks.
• XCSnippetr - An Xcode Plugin to upload code snippets directly into Slack and Gist.
• Lin - Xcode plugin that provides auto-completion for NSLocalizedString.
• Rephrase - Localise from Xcode.
• RealmPlugin - Xcode plugin to generate new Realm models.
• Rephrase - Localise from Xcode.
• UIColor-Hex-Swift - Convenience method for creating autoreleased color using RGBA hex string. 🔶
• Rephrase - Localise from Xcode.
• Rephrase - Localise from Xcode.

Themes

• Dracula Theme - A dark theme for Xcode.
• Xcode themes list - Color themes for Xcode.

Forums and discuss lists

• iPhone Dev SDK Forum

• FHSTwitterEngine
• STTwitter - C library for Twitter REST API 1.1
• Giphy - C.
• UberKit - A simple, easy-to-use Objective-C wrapper for the Uber API.
• InstagramKit - Instagram iOS SDK.
• objectiveflickr - ObjectiveFlickr, a Flickr API framework for Objective-C.
• DribbbleSDK - Dribbble iOS SDK.

News, Blogs and Feeds

• iOS8-day-by-day
• Lifehacker
• Natasha The Robot
• Apple's Swift Blog
• iOS Programming Subreddit
• iOS Dev Weekly
• Mathew Sanders

Misc

• Synx - A command-line tool that reorganizes your Xcode project folder to match your Xcode groups.
• dsnip - Tool to generate (native) Xcode code snippets from all protocols/delegate methods of UIKit (UITableView, ...)
• NY Times - Objective C Style Guide - The Objective-C Style Guide used by The New York Times.
• Github Objective-C Style Guide - Style guide & coding conventions for Objective-C projects.
• Objective-C Coding Convention and Best Practices - Gist with coding conventions.
• Spotify Objective-C Coding Style - Guidelines for iOS development in use at Spotify.
• Dropbox Objective-C Style Guide
• Futurice iOS Good Practices - iOS starting guide and good practices suggestions by [@futurice](https://github.com/futurice).
• Swift Style Guide by @raywenderlich - The official Swift style guide for raywenderlich.com. 🔶
• Github - Style guide & coding conventions for Swift projects - A guide to our Swift style and conventions by @github. 🔶

UIKit references

• iOS Fonts
• UIAppearance list

Tutorials and Keynotes

• Cocoa is my Girlfriend
• Ry’s Objective-C Tutorial
• Mike Ash
• iOS-Blog

iOS UI Template

• iOS UI Design Kit
• iOS Design Guidelines
• iOS 8 GUI PSD Template

Package Manager

• Alcatraz - The package manager for Xcode.