A lightweight, pure-Swift library for downloading and caching images from the web.

native macOS codings agent orchestrator

High performance and delightful way to play with APNG format in iOS.

Delightful console output for Swift developers.

A command line tool for cleaning unused resources in Xcode.

Harness-agnostic orchestration package for multi-agent consensus workflows

Xcode plug-in which helps you write documentation comment easier, for both Objective-C and Swift.

Send email to any SMTP server like a boss, in Swift and cross-platform

A simple way to present a view controller with keeping the blurred previous one.

An attractive color generator for Swift. Ported from randomColor.js.

Add files and frameworks to your Xcode project after it is generated by Unity 3D.

A spring-like collection view layout. The same effect like iOS7's Message.app

Another ported theme for Jekyll

Vno, just another ghost theme

Overload +-*/ operator for Swift, make it easier to use (and not so strict)

Slides of my talk in Let's Vision 26.

Blog

Documentation of UniWebView Project

UIImage category for image tint. For my blog post http://onevcat.com/2013/04/using-blending-in-ios/

A simple demo indicates how to make a custom view controller transition in iOS 7

Demo project to show how to use UserNotifications framework in iOS 10

iOS Weekly issue for InfoQ CN

Proof of concept for back-porting Observation framework to earlier iOS versions

State-based View Controller demo

An easy-to-use UITableViewCell subclass that implements a swippable content view which exposes utility buttons (similar to iOS 7 Mail Application)

Provides an easy to use action sheet for debugging purpose when shaking your iOS device.

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A lightweight link collection, displaying and sharing system. Self-host supported.

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A meta library to provide a better `Delegate` pattern.

Email address parser.

A demo for starting using SpriteKit. Port famous Cocos2DSimpleGame to SpriteKit.

AI 的小船说翻就翻！

No description.

Apple-platform wrapper around @pierre/diffs with WKWebView-backed native diff UI

Potatso is an iOS client that implements Shadowsocks proxy with the leverage of NetworkExtension framework in iOS 9.

Get MIME type string from the extension of a file name

Code, illuminated. Syntax highlighting for Swift TUI and CLI applications.

A demo to show how to write a today extension.

Turn your Claude Code subscription to an OpenAI API compatible provider

A demo project for my blog post

Fetch · Translate · Read | A pipeline to turn a link to a beautify web page in your language, by your OpenClaw.

AI agent skills by onevcat

那些真正对 iOS 程序员好的公司

UITestDemo

Just a TDD demo with XCTest and Kiwi

No description.

JekyllScroll is a theme for Jekyll.

Personal prompts for polishing dictation results

A universal webview plugin for Unity3D. Work with iOS, Android and Mac, using javascript to interact with Unity3D.

Easily convert your favorite VS Code themes to Xcode format

The debug application for Apple Push Notification Service (APNs).

An easy border timer with configurable time, corner radius, line width and colors.

No description.

My Notes: http://notes.onevcat.com

LGTM images collection

A collection of tools that an iOS developer should know.

A nicer iOS UI component for picking date and time

Chat and Messaging UI components for iOS, built to work with Layer

Script for Unity3D, unpause Unity3D animations or particles when set Time.timeScale = 0.

Never miss a Meet again.

Use Kiwi to replace objc.io's first issue. Just a demo for Kiwi and my post.

Swift CI script. Stolen from vapor.

A demo app for studying of TCA

A command-line tool to check binary file committed to a repo.

A client of Texas Poker

Crash sample of Kingfisher SwiftUI with SPM on Xcode 11.2 beta

WKZombie is a Swift framework for iOS/OSX to navigate within websites and collect data without the need of User Interface or API, also known as Headless browser. It can be used to run automated tests / snapshots and manipulate websites using Javascript.

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Plain-Text Editor for OS X

文言文編程語言 A programming language for the ancient Chinese.

Images for PokeMaster

Simple and easy logging in Swift.

No description.

Integration Test Cases for LINE SDK Swift

A demo for how to make a simple Xcode 4 plug-in.

No description.

Testing HTTP requests has never been easier. Nocilla: Stunning HTTP stubbing for iOS and Mac OS X.

DevToys For mac

Elegant HTTP Networking in Swift

This maintains proposals for changes and user-visible enhancements to the Swift Programming Language.

Elegant transition library for iOS, written in Swift.

The easiest way to display highly customizable in app notification banners in iOS

BBS with Perl. Powered by OneV's Den.

All current objc.io articles

The personal website framework for Hugo. Demo at

A minimal, sidebar, responsive web design Jekyll theme, focusing on text presentation.

Math

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A Twitter Reader for iOS

Submail email provider for Vapor

User defined literals for Objective-C

A guide to help you write better command-line programs, taking traditional UNIX principles and updating them for the modern day.

Powerful menu bar manager for macOS

No description.

Simple library to detect motion type (walking, running, automotive)

Interactive diagrams for ReactiveCocoa

A simple, decentralized dependency manager for Cocoa

It's a user page

Just a demo

Easily accept payments on iOS

No description.

A Cocoa library to extend the Objective-C programming language.

Practice my elm understanding

Elegantly handle WebP format with Kingfisher.

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LIBPNG: Portable Network Graphics support, official libpng repository

原汁原昧 Claude Code 可运行版; Bun 可编译执行版; Typescript 类型全修复; 企业级可靠性; 安全无毒, lock 文件保真, 可直接 bun i; bun run dev 启动

Release Repo for Oh My Agents app

No description.

Maple Mono: Open source monospace font with round corner, ligatures and Nerd-Font for IDE and terminal, fine-grained customization options. 带连字和控制台图标的圆角等宽字体，中英文宽度完美2:1，细粒度的自定义选项

A drop-in universal library helps you to manage the navigation bar styles and makes transition animations smooth between different navigation bar styles while pushing or popping a view controller for all orientations. And you don't need to write any line of code for it, it all happens automatically.

Book build image for ObjCCN

A collection of Claude Code guidelines that I use every day.

Attributed String Builders

KeyboardMan helps you to make keyboard animation.

Beautiful animated Alert View. Written in Swift

Type-safe networking abstraction layer that associates request type with response type.

A collection of awesome resources related to the yearly Advent of Code challenge.

For fun

State of cells in "lazy" container is lost, if the cell is embedded in a stack

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Declarative, configurable & highly reusable UI development as making Lego bricks.

👷‍♀️ Closure-based delegation without memory leaks

🃏 A magical documentation site generator.

Xcode plug-in that provides autocomplete for imageNamed: calls

Stripe bindings for iOS and OS X

The web site of Prowl

A CLI for tangled operations.

AXe is a CLI tool for interacting with Simulators using Apple's Private Accessibility APIs.

Sample Skills for OMA importing feature

Test images for Swift image downloading framework - Kingfisher.

A library for building applications in a consistent and understandable way, with composition, testing, and ergonomics in mind.

This subclass of the iOS UITableViewController makes it easy to hide rows and/or sections in a static grouped UITableViewController

The Swift Programming Language

No description.

Easier way to push your viewController.

Declarative, testable data source of UICollectionView and UITableView.

Update My Idea

Seed's official website

A repository for exercism's website's copy

A collection of LLDB aliases/regexes and Python scripts to aid in your debugging sessions

Shows FPS, CPU and memory usage, device model, app and iOS versions above the status bar and report FPS, CPU and memory usage via delegate.

A modern async client library for Rust, supports Slack Web / Events API and Block Kit.

slack realtime messaging client for rust

Websockets in swift for iOS and OSX

Generates documentation for Swift projects

Create your own interactive Swift playgrounds with embedded documentation compiled from Markdown

Unity iOS および Android における web view 組み込み例

ObjectiveC additions for humans. Ruby style.

No description.

My general notes

jmap.io website

The programming language for agents

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

No description.

The easiest way to run tests of your iOS and Mac app

Your own personal AI assistant. Any OS. Any Platform. The lobster way. 🦞

A Penguin 🐧 theme for Slidev

Fetch Google Apps Script web apps from CLI with automatic Workspace web authentication

JMAP client library for Rust

No description.

All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).

TransCrab deployment test (GitHub Pages)

Over 450 terminal color schemes/themes for iTerm/iTerm2. Includes ports to Terminal, Konsole, PuTTY, Xresources, XRDB, Remmina, Termite, XFCE, Tilda, FreeBSD VT, Terminator, Kitty, MobaXterm, LXTerminal, Microsoft's Windows Terminal, Visual Studio, Alacritty, Ghostty, and many more

The terminal for orchestrating agents - Run a team of Claude Code, OpenCode, or any other CLI agents on your machine

Kanagawa Theme for JetBrains IDEs

Nix Packages collection & NixOS

No description.

Turn any browser into your terminal & command your agents on the go.

🤖 The largest directory for AI-ready documentation and tools implementing the proposed llms.txt standard

🍒 Cherry Studio is a desktop client that supports for multiple LLM providers. Support deepseek-r1

The Foundation Project, providing core utilities, internationalization, and OS independence

The Package Manager for the Swift Programming Language

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

Official themes for Slidev

Code review plug-in for Xcode 4

Decentralized Autonomous Regulated Company (DARC), a company virtual machine that runs on any EVM-compatible blockchain, with on-chain law system, multi-level tokens and dividends mechanism.

📁 Repository containing sample files for testing

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HTTP Stubbing in Swift

Seed TodoMVC app example, used in guides on https://seed-rs.org.

My vim config

The source list of repositories for the SwiftPM Library.

test

Extracts card info from Hearthstone into JSON format

Create useful .gitignore files for your project

Manxia blog

The TodoMVC app written in Elm, nice example for beginners.

Example images for the various EXIF orientation flags, in both landscape and portrait orientation.

📄 Unofficial Dropbox Paper desktop app

📝 Minimalistic Vue-powered static site generator