Cache doesn't claim to be unique in this area, but it's not another monster library that gives you a god's power. So don't ask it to fetch something from network or magically set an image from URL to your UIImageView. It does nothing but caching, but it does it well. It offers a good public API with out-of-box implementations and great customization possibilities.

Zewo is a set of libraries for server side development. With Zewo you can write your web app, REST API, command line tool, database driver, etc. It's goal is to create an ecosystem around the modules and tools it provides so you can focus on developing your application or library, instead of doing everything from scratch.

A drop-in universal library that helps you to manage the navigation bar styles and makes transition animations smooth between different navigation bar styles while pushing or popping a view controller for all orientations. And you don't need to write any line of code for it, it all happens automatically.

BetterSegmentedControl is an easy to use, customizable replacement for UISegmentedControl and UISwitch written in Swift.

Junior B. explains what are the benefits of Reactive Programming.

Natasha explains use-cases where she loves to use extensions, even though that’s “not what extensions are made for”.

It seems that in almost every iOS project, one of the first questions developers ask themselves is: Should we use storyboards, XIBs or write the whole UI in code? This blog post explains when to use which tool in your project.

Marcus walks you through a design pattern that he has been using on iOS for applications that require and use a large amount of data frequently requested from the internet. The design takes the well known Model View Controller pattern and expands upon it to allow for asynchronous network calls that are isolated from the User Interface controllers.

Automated code review for Swift, Ruby and Go. Codebeat gathers the results of code analysis into a single, real-time report that gives all project stakeholders the information required to improve code quality.

Apple's documentation is great for learning Swift, but who's got the time to read all that?
This summary cuts to the chase. It is directly written on the Playgrounds platform, which makes it very interactive. You can tinker around with it as much as you like!