I’m Maciej Włodarski. I build web, desktop and CLI apps, connect systems and automate repetitive work, including with AI. From a small fix to a complete tool.
A shape from a 3D model or from text.
The surface breaks up into thousands of points.
The points fit inside a glass block, with room around the edges.
This illustrates an idea I’m working on in Lumina; it isn’t a screen from the app. Drag the object to rotate it.
Lumina is my desktop and CLI app. It turns photos and models into point clouds, lets you arrange a scene inside a crystal and exports a file for the engraver. The code is private.
I start with one thing that needs to work: an interface, a server, an integration or a script, whatever is missing.
Dashboards, shops and browser tools, with the server behind them. Examples: STUDIO 3D, Gwar.
Native on macOS or across platforms, plus command-line tools. Examples: Burrow, Lumina, mcpm.
Shops, inventory, APIs and spreadsheets connected so no one has to re-enter data. Examples: STUDIO 3D.
Repetitive work with files, product descriptions and reports, with AI models where they make sense.
I collect, clean and present data so it’s quick to compare.
Browser previews, point clouds and production-ready files. Examples: Lumina, STUDIO 3D.
It can be one fix, a complete tool or a longer collaboration.
Tell me what you needTwo axes, a time range and one conclusion in a plain sentence. The same layout works for sales, campaigns, customer support and anything else you can count.
BackpackHeadphones
Last 14 days · average over 14 days
Backpack has fewer returns than Headphones, but lower sales.
Relationship between rating and returns: clear, negative, r = −0.67.
| Product | Daily sales | Margin | Returns | Rating |
|---|---|---|---|---|
| Lamp | 16.4 | 38.9% | 7.4% | 3.77 |
| Mug | 16.6 | 22.6% | 4.0% | 4.12 |
| Backpack | 15.3 | 31.4% | 5.0% | 4.38 |
| Headphones | 30.0 | 39.6% | 5.3% | 3.99 |
| A5 notebook | 22.9 | 43.6% | 8.3% | 3.67 |
| Bag | 19.0 | 45.9% | 5.9% | 4.76 |
| Frame | 21.4 | 25.5% | 4.8% | 4.12 |
| Speaker | 19.8 | 24.5% | 5.0% | 4.39 |
| Organizer | 10.3 | 42.3% | 3.5% | 4.57 |
| Bottle | 7.1 | 20.7% | 8.9% | 3.75 |
| Cushion | 21.2 | 34.7% | 5.0% | 4.07 |
| Clock | 8.9 | 25.2% | 6.2% | 4.25 |
| Candle | 20.3 | 37.8% | 6.6% | 4.26 |
| Puzzle | 14.2 | 19.9% | 8.8% | 3.75 |
| Calendar | 7.1 | 23.0% | 5.5% | 4.52 |
| Keyring | 17.4 | 36.4% | 6.3% | 4.17 |
A file manager for macOS built with SwiftUI and AppKit. Two panes side by side, search and metadata in one window.
Code on GitHub Swift, SwiftUI, AppKit
My own apps and work for STUDIO 3D. Some of the code is public on GitHub.
STUDIO 3D and Lumina
A personalised-product shop for STUDIO 3D: the customer uploads a photo, sees a 3D preview of their product right away, and the order lands in the shop system with nothing retyped. Underneath runs Lumina, which turns a photo or model into points, arranges them inside a crystal and prepares the production file.
Voice chat for your own server. Rust, web, desktop.
“I started it because TeamSpeak was moving too slowly for me, and Discord won’t let you run your own server.”
I’m working on compatibility with TeamSpeak clients, so people don’t have to switch apps right away.
A mod manager and launcher for Minecraft. TypeScript, CLI.
It installs mods from Modrinth with their dependencies, keeps every profile separate with its own saves and settings, and launches the game without the official launcher. Sign-in with a Microsoft account, with the token protected by the system: Keychain on macOS, DPAPI on Windows.
I’m drawn to the places where one system has to get along with another: a shop with its warehouse, a 3D model with a production file, a person with the spreadsheet they’ve been filling in by hand for years. That’s usually where most of the time goes.
I build native macOS apps, browser apps and servers in Rust, because I pick the technology to fit the problem. In my spare time I analyse esports matches: you have to understand the data before you can show it to anyone. Projects work the same way, and what’s left at the end should keep running without me.
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Where to go or what to do