Awesome Swift Playgrounds

A curated list of awesome Swift playgrounds.

Contributing

Please take a quick look at the contribution guidelines first. Thanks to all contributors; you rock!

If you see a playground here that does not work anymore with the current release of Xcode or is not a good fit, please submit a pull request to improve this file or consider updating it, thank you!

Downloading all the playgrounds

Unless otherwise indicated, all playgrounds are compatible with Swift 3.

All the playgrounds are available as submodules in the playgrounds/ directory, to download them all in one go, just clone this repository with git clone --recursive https://github.com/uraimo/Awesome-Swift-Playgrounds.git or execute git submodule update --init after you have cloned the repository the usual way.

Apple's playgrounds distributed as zip archives have to be downloaded manually.

Learning Swift

Some interesting playgrounds to learn Swift

The Swift Programming Language Playgrounds - 40+ playgrounds, one for each chapter of Apple's Swift book. 🌟
Swift Hack Pack - Collection of playgrounds that teaches Swift.
The Swift Summary Book - A summary of Apple's Swift language. 🌟
Swifter Tips - Examples for every feature of the Swift language.
About Swift - A playground about Swift language.
MPCS51032 UChicago iOS Course - Playgrounds from the 2017 Spring iOS course of the University of Chicago.
What's new in Swift 4 - An Xcode playground showing off the new features in Swift 4.0. 🍁 🌟

Learning Swift: Advanced Topics

Advanced topics, useful once you have mastered the basics of the language

A Swift Introduction to Core Data - Learn Core Data experimenting directly in this playground. 🌟
TDDSwiftPlayground - Demonstration of using Swift Playgrounds in Test Driven Development with XCTest.
Concurrency on iOS - Concurrency and Parallelism in iOS.
Modern Core Data - An introduction to Core Data.
Swift DSL Example - Implementation of a DSL in Swift.
Katan - A micro web server that replies "Hello world!" to every request, an example of how to use sockets in Swift.
Swiftly Typed Resources - A playground showing how Swift makes Strings, Colors, Fonts, Images, etc easier to deal with. ⏳
Swift KVO Closures - Swift KVO playground. ⏳
Swift Date Tutorial - Learn everythig about NSDate. ⏳
Swift And C - Examples about using C with Swift. ⏳
Swift Memory Management - How to avoid retain cycles, from this post. ⏳

Design Patterns

Design Patterns Playground - Learning GoF's Design Patterns in Swift 3.
iOS Design Patterns - Sample projects for MVC, MVP, MVVM, and VIPER.
Design Patterns in Swift - Design patterns in Swift 3.
GOF Swift - Learn all 23 Gang of Four patterns using Swift.

Protocol Oriented Programming

Swift Diagram Playgrounds - Adaptation of the Protocol-Oriented Programming in Swift talk from WWDC 2015.
Swift Protocol Extensions - A playground to explore Protocol Extensions. ⏳
Battleship Example - An example of how to use Protocol Oriented Programming with the battleship game. ⏳

Functional Reactive Programming

ReactiveCocoa Playground - The easiest way to get a taste of ReactiveCocoa. ⏳
Swift Reactive Playground - Companion to the article: ReactiveCocoa made Simple With Swift. ⏳

Apple's Playgrounds

Playgrounds from Apple, usually presented at some WWDC

Apple's Mandelbrot Playground - A playground with the mandelbrot fractal (updated to Swift 3 by @palmerc, @kemalenver).
Apple's Balloons Playground - The balloons playground showed at WWDC14. ⏳
Interactive Playgrounds - Playground that presents the interactive playgrounds feature with a UIKit dynamics Newton's cradle. ⏳ 🌟
Apple's Crustacean Playground - Protocol-Oriented Programming with Value Types. ⏳
Apple's Swift Standard Library Playground - experiment with Swift standard library types and high-level concepts using visualizations and practical examples. ⏳

Playgrounds about Playgrounds

Playgrounds that describe what you can do with playgrounds

XCTest Playground - Better looking tests for playgrounds.
Interactive Playground - Exploring interactivity in Playgrounds.
Mondrian - Make iOS app mockups in Swift 2.x playgrounds. ⏳

Playgrounds from Playgroundbooks

Playgrounds derived from iPad Swift Playgroundbooks

iPad Swift Playgrounds - The sample playgroundbooks converted to playgrounds.

Theoretical Computer Science

Logician - Logic programming in Swift. 🌟
Function Composition in Swift - Exploration of function composition in Swift. 🌟
Swift Adventures in Monad Land - Learn about monads.
Functional Design Patterns - A few functional programming concept and patterns.
Learn about transducers - A little tutorial that explains transducers. ⏳
Swift Functors, Applicatives, and Monads in Pictures - Companion to the article: Swift Functors, Applicatves, and Monads in Pictures. ⏳
Functors in Swift - A playground to introduce Functors in Swift, and their practical usage. ⏳

Algorithms and Data Structures

Algorithms and data structures implemented in Swift

Swift Algorithm Club - Algorithms and data structures in Swift with explanations. 🌟
Sorting Experiments - Alluring experiments with sorting algorithms in Swift, sort of.
Visual Binary Trees - Effortless visualization of arbitrary Binary Trees, along with their pluggable traversal implementations. 🌟
Emoji Intelligence - Neural Network built in Apple Playground using Swift. 🌟
Julia Fractal Playground - A Swift playground that generates beautiful Julia set fractal images.
Tree Trouble Playbook - An interactive Swift Playground Book about Binary Search Trees. 📱
Auto Pong - A tutorial to implement a pong based on a simple AI. 📱
DataStructures Playground - Data Structures and Algorithms in Swift. ⏳
Swiftography - Standard cryptographic algorithms in a Swift Playground. ⏳
Algorithms Playground - Various algorithm implementation in Swift. ⏳
Dynamic Programming With Swift - A set of three dynamic programming problems implemented in a Swift. ⏳
The Jelly Bean Problem - The Jelly Bean problem from Wait But Why. ⏳
Euclidean Strings - A playground leveraging ReSwift to generate Euclidean Strings. ⏳
Sorting Algorithms - Live Visualization of some famous sorting algorithms and your experiments. ⏳

Languages

Programming language interpreters implemented in Swift

Introduction to Compilers - Great introduction to the inner workings of compilers. 🌟
Write your own language: Mu - A playground explaining how to create a tiny programming language named Mu. 🌟
ASM Swift - A playground for learning Assembly language through Swift. 🌟
Register VM - A register-based VM in a Swift playground. 🌟 ⏳
Turtle Playground - A playground with Logo-like commands. 🌟 ⏳
Swift Brainfuck - Brainfuck interpreter written in Swift using Playground. ⏳

Machine Learning

*Neural Network Playground - A neural network Swift playground, with no third party dependencies. 📱

UIKit And Graphics

A list of playgrounds that demostrate various aspect of UIKit and other graphical frameworks

UIStackView Playground - Interesting examples of use of UIStackViews.🌟
Bezier Path Playgrounds - Some playgrounds to better understand UIBezierPaths.
UIKit playground - Playgrounds to experiment interactively with UIKit views.
Checkmark Button - Animated check mark button.
Window Manager Playground - Playground for an experimental window manager. 📱
UIDynamic Playground - Multiple Playgrounds using almost every behaviour of UIDynamic.
WWDC16 Typography 🇯🇵 - Draw a logo or any text with the WWDC16 ASCII texture.
Animated GIF Playground - Swift playground for generating animated GIFs.
RPClarity - Shows a technique for blurring an image behind the characters behind one or more UILabels. ⏳
Swift Clock - An animated clock in a swift playground. ⏳
WatchKit Asset Playground - A swift playground for creating awesome animations for your WatchKit Apps. ⏳
Swift 2.0 Protocol Extension Example - Showing how to use Swift2 protocol extensions to render errors in UIViews and UIViewControllers without subclassing or creating classes. ⏳
Tinting - A small playground to demonstrate image tinting in UIKit. ⏳
Ray tracing Playground - A playground and a series of articles on ray tracing, see also part 2, 3, 4, 5 🌟 ⏳
WWDC16 Logo Playground - Drawing the WWDC16 logo in a playground. ⏳

Core Image

Interpolation Playground - Playground demonstrating lerp, smooth step, Catcall-Rom and others! ⏳
CoreImage for Swift Playgrounds - Growing collection of CoreImage playgrounds from the upcoming book "CoreImage For Swift". 🌟 ⏳
Image Processor - Implementing different image filter algorithms. ⏳

Metal

Metalbrot - Interactive playground that draws the Mandelbrot fractal with Metal. 🌟
METAL Playground - Apple Metal framework playground. 🌟 ⏳

Animations

Core Animation Swift Playgrounds - A set of interesting Core Animation playgounds.
UIViewPropertyAnimator Playground - Playground demonstrating UIViewPropertyAnimator.
WWDC Crowd Simulator 2017 - A SpriteKit experiment to simulate the WWDC2017 logo crowd.
Additive Animations - Experiment with multiple additive animations in Core Animation. ⏳
Core Animation Playground - Companion to Apple's Core Animation Programming Guide. ⏳
Duet-Inspired Trail Effect - How to get a Duet style trailing effect in SpriteKit. ⏳

SpriteKit

SpriteKit Swift 3 - Playground for exploring Sprite Kit.
SpriteKit Collisions - Demonstrates how to perform physics collision detection using Swift and SpriteKit. ⏳
SceneKit Examples - Experiment with SceneKit and Swift. ⏳
SceneKit ARKit Demo - The Xcode 9 ARKit SpriteKit demo as a playground.📱🍁

Audio

Sounds and music

AudioKit Playground Book - A set of playgrounds using AudioKit designed for the iOS10 Playgrounds app. 📱
Bach Playground - A Simple Swift Playground that plays a brief piece by Bach with AVAudioEngine and AVMIDIPlayer.
PlayerNode Playground - Playground using AVAudioEngine with a playernode and effects to play an audio file. 🌟

Mathematics

Live math with playgrounds

Lindenmayer Systems - A Swift playground exploring Lindemayer systems.
Swift Natural Numbers - A playground for implementing the natural numbers and more concepts in number theory.
Numsw - A swift playground book that mimics some of the features of numpy and jupyter notebook. 📱
Geometry with Swift - Learn the basics of geometry and Swift. 📱
Polydoxical - Interactive playground to experiment with roulettes and polygons.
Abstract Algebra - Abstract algebra concepts implemented in Swift.
Swift Accelerate - Using the Accelerate framework and Swift for Linear Algebra. ⏳
Swifty Mathematics - A collection of swift playground about mathematics. ⏳
Numerical Algorithms - Numerical argorithms playground from Ray Wenderlich. ⏳

Libraries and APIs

Library tutorials, in a playground

AudioKit Playgrounds - 130+ Audio synthesis, processing, playback, and analysis playgrounds with AudioKit.
AIToolbox - A set of playgrounds showing machine learning algorithms, all implemented with pieces of the AIToolbox framework code.
Cognitive Service APIs - Get started with the Microsoft Cognitive Services APIs.
Rx Playground - A playground with RxSwift examples.

Playground Sets

Sets of playgrounds about various topics

Public Extensions - A set of useful extensions from @PublicExtension. 🌟
Parks And Recreation - Great collection of interesting playgrounds, for fun and for profit. 🌟
URaimo's Playgrounds - My playgrounds, various topics.
ManuelCarlos's Playgrouds - Various playgrounds.
Sketchytech's Playgrounds - Various Playgrounds. 🌟 ⏳
Swift fun playgrounds - A few playgrounds to showcase Swift peculiar features. ⏳
BradLarson's Playgrounds - Various playgrounds. ⏳
Dmikusa's Playgrounds - Playgrounds that show basic Swift, JSON parsing, sending HTTP requests and basic file IO. ⏳
Cananito's Playgrounds - Various playgrounds. ⏳
Mgrebenets's Playgrounds - Various playgrounds. ⏳
Uberbruns's Playgrounds - Various playgrounds. ⏳

Miscellaneous

What doesn't fit anywhere else, but still awesome

Icon Creator - Create app icons on Swift playground.
2048 Playground - The 2048 game implemented with a playground.
SwiftShell - Bash shell in a playground.
File Browser Playground - Simple File Browser for Swift Playgrounds on iOS.📱
LaunchPad Playground - A playground that simulates a real LaunchPad for making music.
Super Maze - A programmatic maze generator and solver.
Tic Tac Toe - Tic tac toe in a playground.
Spacetime Rhapsody - A Swift Playground visualizing gravity based on Einstein's Theory of General Relativity. 🌟📱
Game Boards - Chess, checkers, tic-tac-toe, sudoku and many others in playground. 🌟 ⏳
StarWars Seals - Emblems from Star Wars in Swift playgrounds via CoreGraphics and UIViews. ⏳
SwiftFiles - Save, Load and Delete files easily from within a Swift playground. ⏳
Earth photos - A slideshow of Earth photos taken by DSCOVR/EPIC. 🌟 ⏳

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