Joseph Derrick.
A growing collection of things I’m building — some living on jderrick.app, some out in the wild — gathered here in one place.
Tools & apps
Things I’ve built for anyone to use — jump right in.
ABS Shim — Serverless Audiobookshelf Backend
A serverless, Cloudflare-native backend that speaks the Audiobookshelf API. Stream your audiobook library from cloud storage to any ABS app — no server to run.
abs-shim.jderrick.app →
Gigsorted — Your details, once. Every gig, sorted.
Payday super for working musicians and crew, without the paperwork. One click makes the bank file, super file and audit records for every gig. Getting paid is free forever.
gigsorted.com →
Grocery Tracker
Tracks Woolworths, Coles and Aldi grocery prices over time and compares them store-to-store. Feeds the BoxDivvy packer
grocery-tracker.jderrick.app →
KJO Reports — Kyle & Jackie O show analysis
Daily Kyle & Jackie O show reports: AI-flagged moments, full transcripts, advertiser tracking, and audio clips, all browsable in one place.
kjo-reports.pages.dev →Mailing lists and transactional email · cf-email
cf-email.jderrick.app →Paint Tin Label Wrapper
wrapper.jderrick.app →
Pholia — Audiobookshelf Client
A fast, offline-first Audiobookshelf player for the web. Passkey sign-in, chapter-aware playback, and download-for-offline as an installable PWA.
pholia.jderrick.app →
Stitch · combine messaging-app screenshots
Drop overlapping iOS messaging-app screenshots and get one tall image. Runs entirely in your browser — nothing is uploaded.
stitch.jderrick.app →
Story Teller
A digital archive of the classic Story Teller children's audiobooks — listen to every story and read the original magazines online.
storyteller.jderrick.app →
Synoptic Chart — Live NZ weather maps
Surface-pressure charts with fronts, local & world weather, and Christchurch tide times. A clear, large-text weather app.
synoptic-chart.jderrick.app →
TinnyGo — Ride & boat share for Dangar Island & Brooklyn
Community ride and boat share for Dangar Island and Brooklyn (NSW). A small, invite-only PWA that matches neighbours travelling at the same time.
tinnygo.com →
Watermark Remover — in-browser, no upload
Erase the Gemini watermark from images right in your browser. No upload, no sign-up — it reverses the watermark exactly, and can learn other marks too.
watermarkremover.jderrick.app →
Yoomia — Modern Violinist | Electric Violinist | New Zealand
Official website of Yoomia — internationally recognised New Zealand electric violinist, luxury event entertainer, and music educator.
yoomia.jderrick.app →Client work/websites
Sites I’ve built for other people.
Cobalt59 — Systems-based evaluation for water, environment, waste, arts and public programs
Cobalt59 designs monitoring, evaluation and reporting frameworks and delivers independent evaluation for complex water, environment and public programs across Australian government and public agencies.
cobalt59-proposal.josephderrickrepairs.workers.dev →
Dangar Island Merch
Shop official Dangar Island Merch apparel, mugs and more — printed on demand, shipped Australia-wide.
dangarislandmerch.reallycoolstores.com →
emus - exploratory music sydney
a calendar and newsletter for improvised, exploratory, experimental music and sound art in Sydney and its surrounds
www.emus.space →
Ginkgo Glass — Bespoke Stained Glass by Eleanor Carr
Bespoke stained glass by Eleanor Carr — hand-painted commissions, decorative panels and conservation glass painting from a North Yorkshire studio.
ginkgoglass.co.uk →
Joseph Derrick Woodwind & Brass Repairs
Professional woodwind & brass instrument repair in Sydney — flutes, clarinets, saxophones, oboes & brass. Servicing, restoration & overhauls.
josephderrick.repair →
Laura Altman
Laura Altman - Sydney-based musician working with clarinet across improvised, exploratory, and folk music contexts
laura-altman-site.pages.dev →
Robbie Avenaim — Drummer, Sound & Installation Artist
Robbie Avenaim — Australian drummer, sound and installation artist working with robotic and kinetic percussion.
robbieavenaim.com →
Safe in Sound — Music + Improvisation + Communication
An accessible experimental music program bringing live improvised concerts to people with disability — at home and on festival stages across Australia.
safeinsound.com.au →
Splinter Orchestra
A radically inclusive large-scale improvisation orchestra based in Sydney
www.splinterorchestra.com →
Swing 42
Swing 42 is a jazz manouche band from Christchurch, New Zealand — inspired by Django Reinhardt, playing hot jazz with heart.
swing42.jderrick.app →Behind the scenes
Private, auth-gated builds — the link works, but you’ll be asked to log in.
BoxDivvy Packer
Turn the weekly BoxDivvy packing-guide xlsx into the four printout sheets used while packing customer boxes, with Claude-assisted category suggestions for new products.
🔒 packer.jderrick.app →
cf-pbx — multi-tenant PBX with an edge-native control plane
The control plane — dashboard, config, APIs and live calls — runs on Cloudflare Workers, D1 and Durable Objects. FreeSWITCH handles the actual call audio on a media node.
🔒 pbx.jderrick.app →
Deerubbin Car Share
Community car sharing on the Hawkesbury River. Book a shared car, log trips and fuel, and split costs fairly.
🔒 dangarcar.pages.dev →
Podcast Feed Generator
Turns live radio recordings into podcast feeds — with automated track lists and chapter markers.
🔒 podcasts.jderrick.app →
School Music Scheduler
Weekly lesson timetabling for a peripatetic music teacher — schedules lessons around classes, breaks and campus transit with a constraint solver.
🔒 school-music-scheduler.jderrick.app →
wharf dashboard
Live dashboard for wharf — a self-hosted job runner that executes project handlers on remote nodes, invoked from Cloudflare Workers.
🔒 wharf.jderrick.app →Get in touch
Want something built, designed, fixed, or taken off your hands? Tell me about it. Only your name, email, and a message are needed — everything else just means a better first reply.
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