App developer & mini painter. I make apps and break things.

UIKit. Swift. Gaming. Warhammer. Generative AI. Reverse-engineering. Husband. 🏳️‍🌈 He/him.

I write Swift and write about Swift, but most people prefer my dogs.

Full-time open-sourcerer & indie Mac developer. Swift & Node.js.

thwart leader

 unrelated. I'm here for bugs.
☈ https://cryptoswift.io ⌨️ TextKit certified expert @ https://goodnotes.com by day

Get https://notepadexe.com - developer playground.

Text editor implementer by night https://github.com/krzyzanowskim/STTextView

Dad, husband, Swift language designer and Swift/C++/ObjC compiler implementor, Author, Generic Programming aficionado. He/him.

Swift, squirrels, cycling, cities for people not cars. My book: Advanced Swift. Berlin. Languages: de/en.

Invisible characters: When posting code, I sometimes insert a zero-width space (U+2060) to prevent things from turning into hashtags or mentions. Example: `@⁠escaping #⁠line`. Beware when copy-pasting such code into your editor.

I put the UI in Ennui • today your love, tomorrow the world.

iOS @ Linear, previously SwiftUI at Apple.

Hudson’s and Oaklyn’s dad 👨‍👩‍👧‍👦 SDKs at RevenueCat 💼 Lead maintainer of fastlane 🚀 Indie Dev Monday 🙋‍♂ Opinions are mine (he/him)
#iOS #Swift #SwiftUi #IndieDev

Author of iOS Dev Weekly and co-creator of the Swift Package Index.

I much prefer email to private mentions here. You can email me at [email protected].

Swift and Go. Love 'em both. They make me mad in completely different ways. Infosec as required. robnapier.net

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Sr Software Engineer at Apple, currently C1 Developer Tools, previously Swift DocC. All the info at http://underplot.com

The cause of several bugs since iOS 4.
Working on https://alyxcaffeinetracker.com
Dev Rel at Superwall.
Wrote a book series over iOS dev.
I make a basketball app for coaches too, Elite Hoops.

Until next time ✌️.

Developer of indie macOS apps. The Archive, WordCounter, TableFlip, Move!

Using #Xcode to write #Swift and sometimes #SwiftUI apps for #iOS and #Mac.

OG #Zettelkasten zealot.
Local #urbansketchers group founder.

#Bielefeld (Germany)

A video series exploring Swift and functional programming. Hosted by @mbrandonw and @stephencelis.

Save 30% off today! https://www.pointfree.co/discounts/black-friday-2025

I coined the term “Mac Assed Mac App.”

A software developer from Portland Oregon. I’ve been writing iOS and Mac apps since 2008 and Ruby since 2021.

📱 #Swift (iOS and Mac).
🚂 #Ruby (and Rails)

Cohost of the #RooftopRuby podcast. Friend of DeSoto.

Language designer and implementer at Apple: Swift, Objective-C, C++, C. Erstwhile editor of the Itanium C++ ABI. Focus on security mitigations and low-level language implementation.

Twitter migrant! Boomer here (aka OLD)Brooklyn NYC born and raised, but live in hell in DeSantis land now🤮 My family, politics, tea drinking, Whovian, raising Monarch 🦋, dogs, plants, books and golf are my jam! PS I am a Senior Swiftie!

iOS Dev Happy Hour & CommunityKit organizer

Swift Leeds 2025 Speaker 🇬🇧
Swiftsonic 2026 Speaker 🇺🇸

My latest app is Please Don’t Rain (2023 AppleVis Golden Apple nominee for its accessibility support)

he/him

#accessibility

Father. Husband. Programmer.

Creator of Cake and Spectre.Console.
Microsoft MVP. GitHub Star alumni
I like OSS, C#, Swift and Rust.

Ally ✊🏾🏳️‍🌈🏳️‍⚧️♀️