Density is a simple OS X utility app made for Designers & Developers to help them calculate the dimensions for multiple screen sizes.

Apple today previewed macOS Sierra, a major update to the world’s most advanced desktop operating system, with new features that make the Mac smarter and more helpful than ever. Siri is now on the Mac with brand-new capabilities to help with the things users do every day on their desktop. With Siri, users can look up information, find documents, pin or drag and drop search results, and even adjust system preferences.

MAMP PRO is the commercial, professional grade version of the classic local server environment for OS X: MAMP. Designed for professional Web developers and programmers, MAMP Pro allows easy installation and administration of their development environment under OS X.

Sandvox is for Mac users who want to create a professional looking website quickly and easily. With Sandvox, you don't need to be a Web genius to build a stylish, feature-rich, standards-compliant website that's functional and user friendly. Sandvox's drag and drop interface lets you watch your website take shape and come to life as you build it. And, once finished, you can upload your site to your favorite host.

Learn to use Bohemian Coding’s Sketch 3 for all of your interface design work with this 3-hour comprehensive beginner’s guide to the app that more and more interface designers are choosing as an alternative to Photoshop. In this 3-hour video tutorial, you get a complete introduction to using this lean, yet powerful new program.

iOS has visual UI development tools built right into Xcode, the IDE that iOS developers use the most. Xcode's Interface Builder provides graphical tools for manipulating layouts and views—which means little to no programming required. Interface design is a great way to break into iOS app development, or expand your programming skills to the realm of UX.

Introduction to Swift Programming is the first course in a four part specialization series that will provide you with the tools and skills necessary to develop an iOS App from scratch. By the end of this first course you will be able to demonstrate intermediate application of programming in Swift, the powerful new programming language for iOS. Guided by best practices you will become proficient with syntax, object oriented principles, memory management, functional concepts and more in programming with Swift.

Learn Swift 2. These tutorials take you through the basics of Swift, the fast, interactive codebase for programming iOS, Mac OS X, tvOS, and even Watch OS apps. Swift is ideal for new programmers who want to build their first apps, as well as experienced developers who are migrating from Objective-C.

Spriter enables the "modular" method of animating where frames are constructed from many small, re-useable images (such as body parts). This method of animating offers many benefits for several aspects of a game's development and for the finished product:

Advanced Swift takes you through Swift’s features, from low-level programming to high-level abstractions.

In this book, we’ll write about advanced concepts in Swift programming. If you have read the Swift Programming Guide, and want to explore more, this book is for you.

Swift is a great language for systems programming, but also lends itself for very high-level programming. We’ll explore both high-level topics (for example, programming with generics and protocols), as well as low-level topics (for example, wrapping a C library and string internals).

Xcode includes everything developers need to create great applications for Mac, iPhone, iPad, and Apple Watch. Xcode provides developers a unified workflow for user interface design, coding, testing, and debugging. The Xcode IDE combined with the Cocoa frameworks and Swift programming language make developing apps easier and more fun than ever before. Xcode includes the Xcode IDE, Swift and Objective-C compilers, Instruments analysis tool, simulators, the latest SDKs, and hundreds of powerful features.

In this iOS Developer's Guide to Views and ViewControllers training course, expert author Jesse Feiler teaches you how to build an app using Xcode storyboards. This course is designed for users that already have user experience with iOS or OS X as well as Swift, Objective-C or another object-oriented language.

In this Mac OS X from the Command Line training course, expert author Chris Tarnowieckyi will teach you all about the command line tools and how to use them. This course is designed for users that are already familiar with Mac OS X.

There seems to be a notion among uninformed beginners in programming that the VIM editor was born out of some sort of a relic and is used only by nerds who are fond of Unix. It is true to some extent. But relics are also classics that have a charm of their own which cannot be replicated. It is a privilege to learn them.

Learn how to create HTML-based websites with Muse—a toolset familiar to anyone who has used Adobe Photoshop, InDesign, or Illustrator.