Apple ORG

A tool for creating and running Linux containers using lightweight virtual machines on a Mac. It is written in Swift, and optimized for Apple silicon.

Apple's native container tool for running Linux software on Mac with Apple silicon, using lightweight virtual machines instead of Docker.

Stable Diffusion with Core ML on Apple Silicon

Apple's toolkit for converting Stable Diffusion image-generation models to run entirely on iPhones, iPads, and Macs using Apple's own chips, no cloud server or internet connection required.

FoundationDB - the open source, distributed, transactional key-value store

An open-source distributed database from Apple that delivers full ACID transactions across a cluster of servers, the same reliability guarantees as a single-server database but at distributed scale.

A configuration as code language with rich validation and tooling.

Core ML tools contain supporting tools for Core ML model conversion, editing, and validation.

A place for creators and users of password managers to collaborate on resources to make password management better.

Legacy mirror of Darwin Kernel. Replaced by https://github.com/apple-oss-distributions/xnu

The source code for XNU, the hybrid kernel at the heart of macOS and iOS, combining the Mach microkernel, FreeBSD-derived subsystems, and the IOKit driver framework, published by Apple as part of the Darwin open-source project.

Turi Create simplifies the development of custom machine learning models.

Apple's Python toolkit for building machine learning models without needing to know the math, trains image classifiers, sound recognizers, and recommenders in a few lines of code and exports them as Core ML files ready for iOS or macOS apps.

Containerization is a Swift package for running Linux containers on macOS.

A Swift library from Apple that lets macOS apps run Linux containers, each isolated in its own fast-booting virtual machine on Apple silicon hardware.

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Apple research AI model that can accept a drawn region in an image as input and return answers that refer back to specific image locations, designed for spatial visual reasoning and UI understanding.

Sharp Monocular View Synthesis in Less Than a Second

SHARP is Apple's research tool that generates realistic novel viewpoints of a scene from a single photograph using 3D Gaussian splatting, producing a full 3D representation in under a second on a GPU.

Event-driven network application framework for high performance protocol servers & clients, non-blocking.

SwiftNIO is a networking library from Apple for Swift that handles thousands of simultaneous server connections efficiently using an event-driven, non-blocking model, no separate thread needed per connection.

This repository contains the official implementation of "FastVLM: Efficient Vision Encoding for Vision Language Models" - CVPR 2025

CoreNet: A library for training deep neural networks

Commonly used sequence and collection algorithms for Swift

Depth Pro: Sharp Monocular Metric Depth in Less Than a Second.

Plugin and runtime library for using protobuf with Swift

Embedding Atlas is a tool that provides interactive visualizations for large embeddings. It allows you to visualize, cross-filter, and search embeddings and metadata.

Commonly used data structures for Swift

A Logging API for Swift

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Straightforward, type-safe argument parsing for Swift

Async Algorithms for Swift

TensorFlow for macOS 11.0+ accelerated using Apple's ML Compute framework.

Reference implementation of the Transformer architecture optimized for Apple Neural Engine (ANE)

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An Extensible Deep Learning Library

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Apple CUPS Sources

This repository contains the official implementation of the research paper, "FastViT: A Fast Hybrid Vision Transformer using Structural Reparameterization" ICCV 2023

Hypersim: A Photorealistic Synthetic Dataset for Holistic Indoor Scene Understanding

CVNets: A library for training computer vision networks

Generate Swift client and server code from an OpenAPI document.

Advanced mathematical types and functions for Swift

SwiftUI sample code from WWDC22

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4M: Massively Multimodal Masked Modeling

Open-source implementation of a substantial portion of the API of Apple CryptoKit suitable for use on all Swift supported platforms.

This repository contains the official implementation of the research papers, "MobileCLIP" CVPR 2024 and "MobileCLIP2" TMLR August 2025

This repository provides the code and model checkpoints for AIMv1 and AIMv2 research projects.

Low-level system calls and types for Swift

Official repository of NeuMan: Neural Human Radiance Field from a Single Video (ECCV 2022)

Low-level atomic operations for Swift

Python bindings for access to the on-device model at the core of Apple Intelligence through the Foundation Models framework

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Model export recipes, Python primitives, and Swift runtime utilities for on-device AI

Version-independent HTTP currency types for Swift

A networking framework that evolves with your application

Private Cloud Compute (PCC)

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Device management schema data for MDM.

This repo accompanies the research paper, ARKitScenes - A Diverse Real-World Dataset for 3D Indoor Scene Understanding Using Mobile RGB-D Data and contains the data, scripts to visualize and process assets, and training code described in our paper.

This repository contains the official implementation of the research paper, "An Improved One millisecond Mobile Backbone" CVPR 2023.

DiffuCoder: Understanding and Improving Masked Diffusion Models for Code Generation

API package for reading configuration.

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Metrics API for Swift

Peer-to-peer cluster implementation for Swift Distributed Actors

Homomorphic Encryption library and applications in Swift

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[CVPR 2025 Highlight] Matrix3D: Large Photogrammetry Model All-in-One

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Train high-quality text-to-image diffusion models in a data & compute efficient manner

The Calendar and Contacts Server.

SwiftNIO SSH is a programmatic implementation of SSH using SwiftNIO

HTTP/2 support for SwiftNIO

[ICLR 2026] LiTo: Surface Light Field Tokenization

TLS Support for SwiftNIO, based on BoringSSL.

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Build and publish container images using Swift Package Manager

Apple corecrypto

Official repository of HUGS: Human Gaussian Splats (CVPR 2024)

A benchmarking tool for Swift Collection algorithms

The Node.js server library for the App Store Server API and App Store Server Notifications.

Simulation framework for accelerating research in Private Federated Learning

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Pkl bindings for the Go programming language

FlexTok: Resampling Images into 1D Token Sequences of Flexible Length

Logging and communication to allow Swift toolchains to communicate with Xcode.

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Instrumentation library for Swift server applications

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A fresh take on a low-level build system API.

Swift SDK for Temporal

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EgoDex: Learning Dexterous Manipulation from Large-Scale Egocentric Video

An implementation of X.509 for Swift

The Swift server library for the App Store Server API and App Store Server Notifications.

The Java server library for the App Store Server API and App Store Server Notifications.

Shared Pkl packages

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API package for code generated by Swift OpenAPI Generator.

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The Python server library for the App Store Server API and App Store Server Notifications.

Useful code around SwiftNIO.

Examples for using Pkl with Kubernetes

Distributed Membership Protocol implementations in Swift

A service discovery API for Swift.

AudioUnit SDK

URLSession transport for Swift OpenAPI Generator.

Example PIR service & documentation for Live Caller ID Lookup & NEURLFilter

Swift library for FHIR® resource data models

Pkl bindings for the Swift programming language

A Swift implementation of the HTTP Structured Header Field specification.

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An implementation of ASN.1 for Swift

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Report process-level system metrics (memory, CPU, file descriptors) to Swift Metrics

Pkl language support for Neovim

Pkl language support for VS Code

Emerging and experimental patterns for building with the Foundation Models framework

Templates for using Pkl with Kubernetes

A Swift project that provides an implementation of the IMAP4rev1 protocol, built upon SwiftNIO.

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Swift TrueType Interpreter

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Cassandra client in Swift

Shim for connecting Swift host code to BuildKit running in a container.

Less Gaussians, Texture More: 4K Feed-Forward Textured Splatting

Swift NTP library using Swift NIO. Provides an NTPClient.

The pkl-lang.org website

Examples for using Pkl within Swift applications

Language server for Pkl, implementing the server-side of the Language Server Protocol.

Swift implementation of TLS 1.3 for QUIC.

Package providing Oblivious HTTP. Also allows Oblivious encryption of alternative encodings.

Bridges PyTorch and Core AI. Convert existing models to Core AI IR, or author new ones from PyTorch via composite ops, custom op lowerings, and inline Metal GPU kernels.

A Swift Package for using OpenUSD in Swift

A Python toolkit for analyzing machine learning models and datasets.

JetBrains editor plugins providing Pkl language support

Keyframer: Empowering Animation Design Using Large Language Models

CalDAV/CardDAV Testing Framework used by CalendarServer

A library for PyTorch model compression and optimizations for deployment via Core AI on Apple silicon.

Plugins for the Godot game engine on Apple platforms

Resources for porting games and engines to Apple platforms

This repository contains a proposal for standardized HTTP client and server APIs for the Swift ecosystem

A Swift library and command-line tool for creating, validating, and signing Apple Wallet passes.

Tree-sitter parser for Pkl

Spring Boot extension for configuring Boot apps with Pkl

FS-DFM: Fast and Accurate Long Text Generation with Few-Step Diffusion Language Models. FS-DFM accepted for ICLR 2026

UniGen: Enhanced Training & Test-Time Strategies for Unified Multimodal Understanding and Generation

VideoFlexTok: Flexible-Length Coarse-to-Fine Video Tokenization

Network protocol stack in Swift for transports like QUIC.

RayGen: Multi-Modal Dataset Reinforcement for MobileCLIP and MobileCLIP2

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Metal-cpp is a low-overhead C++ interface for Metal

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Common infrastructural helpers on top of NIO for llbuild2 and swiftpm-on-llbuild2 projects. This is NOT a general purpose package and is unlikely to ever become stable.

Bazel build rules for Pkl

Self-Conditioning Pre-Trained Language Models, ICML 2022

JavaScript bindings for RealityKit with type-safe Swift interoperability

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Streaming immersive content from a CloudXR™ application to visionOS and iOS

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Python Framework for macOS APIs used by CalendarServer

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Plugin for Google's conformance test to verify compatibility of swift-protobuf

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Twisted SecureTransport library used by CalendarServer

Python OpenDirectory library used by CalendarServer

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QUIC support for SwiftNIO

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Documentation for Pkl packages

Extensions to Twisted used by CalendarServer

This repository hosts the official policy documentation and public communications for the Apple Root Program. It serves as the authoritative publication point for the Apple Root Program Policy and related materials intended for Certification Authorities, auditors, researchers, and other ecosystem participants.

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Internal utility libraries for Pkl

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HTTP/3 support for SwiftNIO

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Minimal context propagation container

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Loads Apple MapKit JS script dynamically from Apple MapKit CDN.

Repository companioning the paper "Learning Unmasking Policies for Diffusion Language Models"

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Repository accompanying the Interspeech 2022 publication titled "Space-Efficient Representation of Entity-centric Query Language Models" by Van Gysel et al.

Code generation tool for SwiftUsd

TextMate bundle for Pkl

Test your matchmaking rules before running your game using a Python 3 script to execute the App Store Connect APIs.

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QUIC supporting types for SwiftNIO

Highlight.js syntax highlighting for Pkl

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Streaming Text-to-Speech with Interleaved Data

Shared Pkl external readers

The Public Suffix List

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Annotator Policy Models (FAccT 2026)

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