Marcin Krzyzanowski

CryptoSwift is a growing collection of standard and secure cryptographic algorithms implemented in Swift

A pure-Swift cryptography library for iOS, macOS, Linux, and Android that provides hashing, encryption, password hashing, and message authentication with no system library dependencies.

Performant and reusable text view component (TextKit 2), with line numbers and more. UITextView / NSTextView replacement.

OpenSSL package for SwiftPM, CocoaPod, and Carthage, multiplatform

SwiftUI proof-of-concept text edit component

Online Swift Playground

ObjectivePGP is an open-source library for iOS and macOS that provides developers with tools for implementing OpenPGP encryption and decryption, digital signing, and signature verification in their applications, thereby enhancing security and data integrity.

Natalie - Storyboard Code Generator (for Swift)

better claude harness

CoreText Swift bindings

NSTableView with sections (similar to UITableView)

JSON Codable is what we need 90% of the time

*Deprecated* NetPGP wrapper. Use ObjectivePGP

Collection of useful TextKit 2 helpers

SwiftUI AnimatedImage View

Reorder Swift functions

No description.

Source Code Syntax Highlighting

Swift wrapper for kqueue file system monitoring

No description.

binary build of tree-sitter for apple platforms

Xcode Documentation MCP Server

Boyer-Moore algorithm sample

Practical Swift: pages generator - build once, use many

OpenSSL package for SwiftPM

STTextView Annotations Plugin

NSScanner for NSData and files.

Antlr Swift Parser playground

Get the element at the specified index only if it is within bounds, otherwise nil

A Swift package for monitoring directory changes using BSD kqueue

Take a look at the CoreText API - a foundation of layout and drawing text on macOS and iOS. In this workshop we’ll attempt to build Text Label (akin UILabel), learn about layers of CoreText API and how to use it.

"AI" generated Mastodon Client for iOS

Template Plugin repository for STTextView

Most convenient AES256-CBC encryption for Swift 2 & 3

Convert iTerm2 profile settings to Ghostty config

Agent skill for crafting clear names and interface text — distilled from Apple's WWDC naming session and the HIG Writing guidelines

Source Code Typing Completions

Language Server Protocol

custom text view implementation

CloudKit Web Services framework for everyone else...

Swift RawData CollectionType

Kitura-Session store using Swift-Kuery (SQL database abstraction layer) as the backing store

iOS UIImageView with convenient touch delegate

1Password integration for Google sign-in view.

Pi package for running Pi with separate auth profiles such as personal and work

👻 Ghostty is a fast, feature-rich, and cross-platform terminal emulator that uses platform-native UI and GPU acceleration.

Birdie singing songs game. SwiftCrunch hackathon project. Created over few hours from zero.

NSFileProviderManager.signalEnumerator does not trigger update of UIDocumentBrowserViewController

List of agent orchestrators

regular expression library

Generate Swift SDKs for cross-compilation

A macOS control for tabs with enhanced capabilities, and styles: Safari, Chrome and custom ones.

mustach.c wrapper for Swift

MonacoEditor component for Vue.js

GNU Gadu is instant messaging client designed to work with protocols common in Poland (but not only). Contrary to its name, is not part of the GNU project.

A tree-sitter grammar for the Swift programming language.

 This project is dedicated to collecting high-quality macOS software and organizing them systematically by different categories for easy search and use.

A syntax highlighter for JSON data completely written in Swift with no dependencies

Black Friday Deals for macOS / iOS Software & Books

Awesome apps, software, and SaaS deals on Black Friday.

A Swift library for working with syntax highlighting/IDE themes

Capture the shell environment of a Foundation app

Zig language server plugin for asdf version manager

Swift TextBuffer

The Package Manager for the Swift Programming Language

Auth client library for Swift command-line tools and cloud services. Supports OAuth1, OAuth2, and Google Application Default Credentials.

pkg manifests

Objective C common classes used in a few of my projects

EL Passion - RxSwift Workshops

No description.

Alternative to UIScrollView. Proof of concept implementation.

Resize a UIImage the right way from Trevor’s Bike Shed

macOS and Linux VMs on Apple Silicon to use in CI and other automations

Javascript grammar for tree-sitter

Homebrew formulae for krzyzanowskim projects

Apple's developer docs as a Swift package and CLI.

🍻 A CLI workflow for the administration of macOS applications distributed as binaries

pyright fork with various type checking improvements, improved vscode support and pylance features built into the language server

Subprocess is a cross-platform package for spawning processes in Swift.

The infrastructure and project index comprising the Swift source compatibility suite.

Swift API for MLX

Swift library for highlighting, indenting, and querying structured syntax

Substitute po for Swift

JSON grammar for tree-sitter

SPM toolchain to cross compile Raspberry Pi Swift binaries on macOS

VT100/Xterm Terminal emulator in Swift

Mock Alamofire and URLSession requests without touching your code implementation

A plugin for the Kitura-Credentials framework that authenticates using the GitHub web login

A pluggable framework for managing user sessions in a Swift server using Kitura

🚫 This project is no longer maintained. An SQLite plugin for the Swift-Kuery framework

A pluggable framework for validating user credentials in a Swift server using Kitura

A simple, easy-to-deploy backend that you can use to demo our example mobile apps.

`stringWithFormat:` for the sophisticated hacker set

A drop-in replacement for Apple PDFKit powered by our PSPDFKit framework under the hood.

OpenPGP.org website

Swift implementation of the reform dynamic drawing application inspired by Bret Victor's talk "Drawing Dynamic Visualizations"

Parses apple receipts from the filesystem for iOS 7

No description.

Show your own banners like Notification Center within your app.

A UIView to handle entering recipients similar to iOS Mail

Gadu-Gadu (GG) messaging app for GNOME.

Drop-in image cropper for iOS (as seen in Photos app, UIImagePickerController)

Practical real-world dates