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.

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.

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

⬜⬜⬜⬜⬜⬜⬜⬛⬛⬛⬛⬜⬜⬜⬜⬜⬜⬜
⬜⬜⬜⬜⬛⬛⬛🟨🟨🟨🟨⬛⬛⬛⬜⬜⬜⬜
⬜⬜⬜⬛🟪🟪🟪🟨🟨🟨🟨🟪🟪🟪⬛⬜⬜⬜
⬜⬜⬛🟪🟪🟪🟪🟪🟨🟨🟪🟪🟪🟪🟪⬛⬜⬜
⬜⬛🟪🟪🟪🟪🟪🟪🟨🟨🟪🟪🟪🟪🟪🟪⬛⬜
⬛🟨🟨🟨🟨🟨🟨🟨🟨🟨🟨🟨🟨🟨🟨🟨🟨⬛
⬛🟪🟪🟪🟪🟪🟪🟪🟪🟪🟪🟪🟪🟪🟪🟪🟪⬛
⬛🟪🟪🟪🟪⬛⬛⬛⬛⬛⬛⬛⬛🟪🟪🟪🟪⬛
⬛🟪🟪🟪⬛🏻🏻🏻🏻🏻🏻🏻🏻⬛🟪🟪🟪⬛
⬛🟪🟪⬛🏻🏻🏻🏻🏻🏻🏻🏻🏻🏻⬛🟪🟪⬛
⬛🟪🟪⬛🏻🏻⬛🏻🏻🏻🏻⬛🏻🏻⬛🟪🟪⬛
⬛🟪🟪⬛🏻🏻🏻🏻🏻🏻🏻🏻🏻🏻⬛🟪🟪⬛
⬛🟪🟪⬛🏻🏻🏻🏻🏻🏻🏻🏻🏻🏻⬛🟪🟪⬛
⬛🟪🟪⬛🏻🏻⬛🏻🏻🏻🏻⬛🏻🏻⬛🟪🟪⬛
⬛🟪🟪⬛🏻🏻🏻⬛⬛⬛⬛🏻🏻🏻⬛🟪🟪⬛
⬛🟪🟪🟪⬛🏻🏻🏻🏻🏻🏻🏻🏻⬛🟪🟪🟪⬛
⬛🟪🟪🟪🟪⬛🏻

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

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)

I coined the term “Mac Assed Mac App.”

Software developer from Portland, Oregon, now in Hobart, Tasmania.

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

Cohost of the #RooftopRuby podcast. Friend of DeSoto.

@buildbuddy. Maintainer of bazel's iOS support, creator of the Mobile Native Foundation, LLVM & Swift contributor. Previously Modular, Lyft, CocoaPods

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!

I make stuff. he/him 🖖 🐾 🏳️‍🌈, 🇪🇺

Posts in 🇫🇷, 🇳🇱, 🇸🇪, 🇬🇧, 🇧🇬, about Star Trek, Cats 😻, apps, robots, aliens, self-hosting, FOSS, IoT, sustainability...

#IoT #Music #Swift #Elixir

https://flowvi.be @tootsdk

#nobridge

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 ✊🏾🏳️‍🌈🏳️‍⚧️♀️

He/him. Human. #WokeAF

Indie software dev, tinkerer, player of video games, husband, P.U.N.K., futurist, comical element. ⭐️ Alumnus CTO & co-founder of German sustainability startup RECUP 💚

I try to make a living creating #Shortcuts-centered, productivity-related tools for #macOS & #iOS.

From #Flensburg, Europe 🇪🇺

#ShortcutsApp #Developer #dev #SwiftUI #Swift #Typescript #Javascript #ObsidianMD #PKM #Germany #provene04241

Bluesky: https://bsky.app/profile/zottmann.dev

Physicist & techie. #CERN alumnus.
Co-creator https://mas.to/@SwiftPackageIndex.
Hummingbird app https://hbird.app. 
Europe • he/him

Crazy Mac lady. Mac author & developer. Lover of Apple computers and devices. Swift & SwiftUI enthusiast. Unofficial Mac app dev evangelist.