// 02. OPEN SOURCE ECOSYSTEM
Swift Packages, Developer Tools & Cloud Guides.
Production-grade open-source libraries, AI tooling, systems CLI, and cloud architecture guides built for Swift 6, data persistence, and enterprise CI/CD.
Zero-dependency wrapper for Apple Passkeys with async/await, task cancellation safety, and cross-platform iOS/macOS support.
Swift 6
Passkeys
AuthenticationServices
iOS 16+
Production-grade Core Data singleton featuring batch updates/deletes, persistent history tracking, Combine publishers, and background concurrency.
Core Data
Combine
Thread Safety
Batch Ops
Modern SwiftData persistence layer with isolated @ModelActor for thread safety, generic repository abstractions, and in-memory test fixtures.
SwiftData
@ModelActor
Generics
iOS 17+
Enterprise CoreLocation manager with geofencing, reverse geocoding, heading compass, and visit monitoring across Combine and async/await APIs.
CoreLocation
Geofencing
async/await
Combine
Privacy-preserving camera & photo library manager with PHPickerViewController, interactive dismissal safety, and iPad popover compliance.
AVFoundation
PhotoKit
PHPicker
iPad Popover
Design system typography engine with 21 semantic tokens, Dynamic Type (UIFontMetrics), CoreText registration, and unified UIKit + SwiftUI APIs.
Dynamic Type
Design Tokens
CoreText
UIKit + SwiftUI
Production-grade PDFKit utility for AcroField form management, interactive checkbox/radio controls, signature stamping, draft sessions, and rotation-aware flattening.
PDFKit
AcroForms
Signatures
@MainActor
iOS 15+
Comprehensive reference guide and interactive Docsify site for Azure DevOps Pipelines, Fastlane match, multi-stage YAML pipelines, Apple Silicon runners, and secrets governance.
Azure DevOps
Fastlane Match
Code Signing
CI/CD Automation
Practical, 16-module architectural reference and interactive Material for MkDocs documentation site covering EC2, Lambda, S3, VPC, RDS/DynamoDB, IAM security, and cost control.
AWS Cloud
Architecture
MkDocs
Cloud Security
Zero-dependency CLI tool suite for macOS & Linux featuring 3-phase duplicate file hashing, O(1) AWK disk usage stats, recursive inventory scanning, and .DS_Store metadata awareness.
Python 3
POSIX / Bash
Zero-Dependency
CLI Suite
AI photo curation engine combining OpenCV sharpness, OpenAI CLIP neural aesthetics, cosine similarity burst deduplication, transactional two-phase staging, and Apple Silicon MPS acceleration.
Python 3.9+
PyTorch / CLIP
OpenCV
Apple Silicon MPS