Tools by Uri O'Callaghan 26 built

A running index of everything I've built and actually finished. Small, opinionated tools — maps, typefaces, music, weather, embroidery — most of them shipped in a weekend to solve a problem I had exactly once.

I keep forgetting they exist. So here they all are, in one place.

Launched

Live on the internet right now. Click any one of them — free, no account, nothing to install.

Cerdanya 3D Live

An open 3D atlas of the Cerdanya valley. Fly the real terrain, drop into the villages, every place name in Catalan.
- 3D terrain
- Maps
- Catalan
cerdanya-3d.uri-ocallaghan.chatgpt.site
Icon Animator Live

Motion design for icons, minus the After Effects seat. Drop an SVG or grab a Lucide icon, pick a trigger, export.
- Motion
- SVG
- Design
icon-animator.netlify.app
Meteo · Pirineu Live

Mountain weather without the ad tech. Cloud cover and precipitation across the Catalan, French and Aragonese Pyrenees, on one screen.
- Weather
- Maps
- Mountains
meteo-uriocallaghan.netlify.app
Routes Live

Plan a route in the browser, push it straight to your wrist. The companion app for a homemade ESP32 watch.
- Maps
- GPS
- Hardware
routes.uriocallaghan.com
The Atlas Collective Live

A flight sim that runs in a tab. Pick an aircraft, take off anywhere on Earth, and let the map keep the logbook.
- Flight sim
- 3D
- Maps
flights.uriocallaghan.com
Embroidery Studio Live

Preflight for thread. Centred, machine-ready PES files for the Brother Skitch PP1, so nothing goes sideways at 400 stitches a minute.
- Embroidery
- Export
- Hardware
embroiderystudio.netlify.app
tresacords.cat Live

Every love song is three chords. A Catalan songbook for guitarists who only know IV, I and V — and don't need more.
- Music
- Guitar
- Catalan
tresacords.cat
TONAL Live

Photos in, palettes out. Drag the samplers, reroll the seed, export with the overlay. Moodboards in about ten seconds.
- Color
- Photography
- Design
tonal-933.netlify.app
Typeface DNA Live

Own your type stack. You edit the DNA of an open-source grotesk — never the glyphs — and the client walks away with a typeface that's actually theirs.
- Type design
- Branding
- Variable fonts
typoeditor.uriocallaghan.com
Hyperjustified Live

Lyric videos, type first. Every line stretched edge to edge and locked to the waveform, frame by frame.
- Video
- Typography
- Audio
hyperjustified.netlify.app
Meme Lyric Video Live

The unserious cousin of Hyperjustified, and proud of it. Audio in, captioned lyric video out, ready for the group chat.
- Video
- Memes
- Audio
zingy-hamster-ba35c0.netlify.app
Maps You Wish Existed Live

Make the map you actually wanted. WYSIWYG themes, print-grade export, no cartography degree required.
- Maps
- Export
- Design
maps.uriocallaghan.com
Chorder Live

Shazam, but for the key you're in. It listens, finds the tonic, and hands you IV–I–V on the spot.
- Music
- Audio
- Guitar
urichorder.netlify.app
My Bookshelf Live

Your reading, beautifully shelved. Covers, quotes, and a shelf that's genuinely worth sending to someone.
- Reading
- Social
- PWA
uribooks.netlify.app
Poems Live

A quiet surface for writing poems. Compose, arrange, publish — and nothing else on screen.
- Writing
- Poetry
- Publishing
poems.uriocallaghan.com

Coming soon

Native Apple apps, built and running on my own machine. Not released yet — no download link, no public build.

Stem Lab Coming soon

Stem separation that never leaves your Mac. Vocals, drums and instrumental, with live pitch and tempo on each track while it's still working.
- macOS
- Audio
- On-device AI
Tangent Coming soon

Nine physically modelled instruments, zero samples. A native MPE plugin where the strings and reeds are solved in real time, not played back.
- macOS
- AU · VST3
- DSP
Silk Coming soon

One job, done properly: any video into ultra-smooth slow motion. Every in-between frame synthesised on your own GPU. No account, no upload, no API key.
- macOS
- Video
- On-device AI
Subtítol Live Coming soon

Live Catalan captions on a Mac, offline. Not a transcriber — a live editor that decides which words are stable enough for a reader to see.
- macOS
- Speech
- Catalan
Fes Subtítols Coming soon

Drag a video onto the icon, get a word-by-word Catalan SRT next to it. Whisper and Parakeet running locally — the audio never leaves the machine.
- macOS
- Subtitles
- Catalan
AnalogLens Coming soon

Fast-lens depth of field for photos that were never shot on one. A real optical pipeline in Metal, with depth estimated on the Neural Engine.
- macOS
- Photography
- Metal
Llum Coming soon

Any article or PDF, turned into structured knowledge you'll actually retain. Runs on local models, so nothing you read gets logged anywhere.
- macOS
- Reading
- Local LLM
Aquarel·la Coming soon

A watercolour engine that simulates water, pigment and paper rather than faking the texture. Built for Apple Pencil, with a WebGPU studio behind it.
- iPadOS
- Painting
- Metal
glassnote Coming soon

A native Markdown editor that points at a folder you already own. Your vault stays plain files on disk — no sync service, no lock-in.
- macOS
- Writing
- Markdown
Monitor a7C Coming soon

Turns a Mac into a proper external monitor for a Sony a7C. Full-screen live view, framing guides, and camera settings on a translucent overlay you barely notice.
- macOS
- Camera
- Video
Current Coming soon

Your RSS feeds, rebuilt as an editorial magazine — translated, laid out and readable, instead of an inbox with 900 unread.
- macOS
- RSS
- Reading