Mattt

iMCP. I built a macOS app that connects your personal data to AI assistants.

Swift Transformers. I made it easy to add AI language models to Swift apps.

Emcee. I built a tool that lets Claude use any website's data and tools automatically.

Replay. I built a tool that records and replays internet requests for Swift app testing.

Ollama Swift. I wrote a Swift tool that connects Mac apps to local AI models.

Llama.swift. I made a Swift package that brings AI language models to Apple apps.

NSHipster. I wrote a weekly guide to the overlooked parts of Swift and Cocoa.

Madrid. I built a tool to read your iMessage database on Mac.

EventSource. I built a tool for Apple apps to receive live server updates.

Uncertain. I built a tool that lets apps make smarter decisions with unreliable data.

Companion. I made a testing tool for AI model connections on macOS and iOS.

Chat UI Swift. I built a chat app that connects to AI models on Apple devices.

YYJSON. I built a JSON reader for Swift that runs 10 times faster than the standard one.

Olleh. I built a bridge between Apple's AI and the tools developers already use.

Nominate. I made a tool that renames a huge pile of PDFs at once.

Ontology. I built a tool that makes your data speak a common language.

JSONSchema. I wrote a Swift tool that describes data formats for AI models.

IntervalTree. I built a tool that finds overlapping time ranges in milliseconds.

Surge. I made a library that speeds up math and image work on Apple devices.

Swift TOML. I built a Swift tool for reading human-friendly configuration files.

Distribution Visualizer. I made a Mac app that visualizes probability distributions with interactive charts.

Configuration TOML. I made a TOML configuration loader for Swift apps.

Supertone. I built a text-to-speech tool that runs locally on your Mac.

PartialJSONDecoder. I made a tool that decodes incomplete JSON as it streams in.

LinkedList. I wrote a doubly-linked list for Swift with instant insertion and removal.

URITemplate. I wrote a tool that converts web address templates into working URLs.

Hype. I made Python functions that work everywhere at once.

FileSystemMonitor. WIP

Bestline. I built a command-line prompt tool that works without the baggage.

JSONLines. I built a lightweight tool for reading JSON Lines data in Swift.

WebVTT. I built a subtitle file reader and writer for videos.

swift-xet-rust-ffi. Swift bindings to the xet-core Rust crate

OpenAI Swift. I wrote a Swift library that connects apps to OpenAI's AI.

UserAgent. I made a tool that generates realistic browser identification strings.

Swift JSON Speed Test. I made a speed test comparing JSON readers for Swift apps.

GroundControl. I built a tool that lets iOS apps pull settings from a server.

Black Forest Labs Python Client. I built a Python tool to generate images from text descriptions.

Homebrew Tap. I packaged my Mac tools into a Homebrew collection anyone can install.

swift-xgrammar. A Swift package for grammar-guided text generation, powered by xgrammar

CargoBay. I made in-app purchases simpler for iOS app builders.

Asana CLI. I built a command-line tool for Asana that automates workflows.

Glitz. I made a tool that adds colors and effects to terminal text.

Package Reader. I made a tool that reads Swift packages and outputs their details as structured data.

Navajo. I made a password strength checker for iOS apps.

Cupertino Yankee. I built date calculations that respect timezones and local calendars.

swift-registry-benchmark-harness. A harness for benchmarking the performance of building a project with Swift Package Manager using the new package registry interface.

Godzippa. I built file compression for Apple apps.

URLPattern. I built a tool that matches web addresses against patterns and extracts named data.

Sonic Hash. I made a tool that turns passwords into melodies you can hear.

Wilson Rank. I built a ranking tool that sorts voted items the mathematically correct way.