Elegant view layout for iOS. Makes Auto layout code more readable.

Advance is a pure Swift framework that enables advanced animations and physics-based interactions.

A library that computes what size the UICollectionView cells should be to display images in a variable height fixed aspect ratio grid.

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.

Another great blog post by Marin Todorov about custom RxSwift operators.
If you’re currently into RxSwift, check it out!

Starting with RxSwift? This is a good place to start. Droid on roids team nicely explains it's basics.

In this tongue-twister titled article, Matt Gallagher discusses capturing control flow information with stack traces during ongoing tasks to aid debugging. Also included: a reimplementation of NSThread.callStackReturnAddresses in Swift for faster and more flexible stack traces.

Casey Liss explains what is great about Swift enums.                                                  

Great article about dependency injection by Bart Jacobs. If you don't know what DI is, or didn't try it out yet, this is a great start.

Apple announced Swift before Realm was first launched. The team quickly realized how big this would be, and fully committed to building a Swift version of the binding. That meant doing a lot of pioneering work. On the way, many new open tools were created, and existing tools were vastly extended and improved. However, there are far more challenges involved in building a framework for Swift. In this talk from MBLTDev 2015, Marius summarizes his team’s experiences, pointing out pitfalls to avoid and giving hints to help you find your sweet spot for development in the fast-evolving Swift ecosystem.