I build focused Swift packages — each one solves a single problem properly, ships with real documentation, and carries a test suite that runs in CI. Most are SwiftUI-first and depend on nothing but Apple's own frameworks.
WaveformKit — Interactive audio waveforms for SwiftUI
Decoding, disk caching, realtime FFT, pinch-to-zoom, markers, VoiceOver. Zero dependencies, Swift 6, zero-allocation audio callbacks.
Keel — Create and maintain iOS projects from the terminal
Swift 6 / SwiftUI project generator with optional AI analysis. Installable via Homebrew.
MarqueeKit — Scrolling text and content for SwiftUI and UIKit
Smart overflow detection — it works out whether scrolling is needed. Adaptive speed, edge fading, haptics, synchronised groups.
| Package | What it does | Stars |
|---|---|---|
| Strata | Declarative SwiftData migrations — Safe by default, testable in CI, introspectable when things go wrong. |  |
| FlowMotion | Motion infrastructure for SwiftUI — Analytical spring solver, shared-element hero transitions, Canvas liquid morphing, timeline DSL. |  |
| SwiftL10n | Localisation linting for Swift — Catches hardcoded strings, missing assets, and stale translations before they ship. |  |
| Hoist | Type-safe feature flags for Swift — Lightweight, with polling, exposure dedup, and analytics hooks. |  |
- Documentation is part of the deliverable. Every package ships a README that explains the why, not just the API surface. WaveformKit adds a DocC catalogue hosted on Swift Package Index.
- CI gates everything. Builds run warnings-as-errors under the Swift 6 language mode, across every platform the package claims to support.
- Known limitations are written down. If something is not supported, it says so in the README rather than surprising you at integration time.
