Oisin McGrath

I build practical desktop tools, primarily with Python — local databases, PDF generation, and workflows that stay on your machine. My work focuses on software that sole traders and small operators can actually use day to day.

Technical projects

Renault Master Camper Conversion

Perhaps my most ambitious and educational undertaking: in 2025 I converted an Australia Post van into a fully fitted-out campervan, and put it to the test by taking it 4,400 km to the top of Australia.

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Home Screen

A browser new tab page laid out like a phone home screen — an app grid you arrange yourself, with weather, sun times and an assistant bar.

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Cadence

Speak instead of typing, and have your computer read your emails back to you.

See more →

Renault Master Camper Conversion

Perhaps my most ambitious and educational undertaking: in 2025 I converted an Australia Post van into a fully fitted-out campervan, and put it to the test by taking it 4,400 km to the top of Australia.

See more →

Home Screen

A browser new tab page laid out like a phone home screen — an app grid you arrange yourself, with weather, sun times and an assistant bar.

See more →

Cadence

Speak instead of typing, and have your computer read your emails back to you.

See more →

Renault Master Camper Conversion

Perhaps my most ambitious and educational undertaking: in 2025 I converted an Australia Post van into a fully fitted-out campervan, and put it to the test by taking it 4,400 km to the top of Australia.

See more →

Home Screen

A browser new tab page laid out like a phone home screen — an app grid you arrange yourself, with weather, sun times and an assistant bar.

See more →

Cadence

Speak instead of typing, and have your computer read your emails back to you.

See more →

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Software projects

Home Screen

A browser new tab page laid out like a phone home screen — an app grid you arrange yourself, with weather, sun times and an assistant bar.

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Epson RR-70W batch scanner

Driver-free batch scanning for the Epson RR-70W on Linux. Feed page after page straight to PNG or PDF — no OEM software, no cloud account.

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invoiceNow

Desktop invoicing for Australian sole traders — tax invoices, job records, PDF export, and Gmail sending. Runs entirely on your own machine.

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Cadence

Offline dictation and clipboard text-to-speech for Linux. Speak into any app, or hear selected text read aloud. Nothing leaves your machine.

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Capsule

Sandboxed dev containers in one command — DevPod, rootless Podman and VSCodium — for running AI coding agents safely away from your host.

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N-of-1

Offline health tracker for Android, Linux and Windows. See what actually drives your energy, mood and focus. No account, no cloud, no subscription.

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tagdexer

Tag-based code navigation and append-only decision logging for any repo. Find files by what they do, and keep a record of why.

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NitroTune

Fan and thermal control for the Acer Nitro AN515-55 on Linux — a native replacement for Windows-only NitroSense.

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YT Downloader

A browser toolbar button for yt-dlp. Hands the current tab to a helper on your own machine, which saves the audio or video. No account and no third-party service.

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What else drives me

Music

I play Irish traditional music — guitar, banjo and singing — and put covers and the odd lesson up on YouTube as Oisín Mac Craith, which you can find here.

Community

We had a blast volunteering for the St Patrick's Festival with the South West Irish Community Group for both 2024 and 2025 — see more about that here.