* an independent Mac software studio

We build small, sharp tools for people who expect their Mac to keep up with how they actually work.

See the work →
Aetrix Foundry
© 2026 All rights reserved. (Scroll down)
About Aetrix
2

tools on the bench, each doing one job completely.

One person. A short bench of tools. Each one built to do a specific job well, and then get out of your way.

More on GitHub → Duplex - Run a second copy of any Mac app, with its own login | Product Hunt
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Native, not a wrapper

Swift and Rust on Apple's own frameworks. These are Mac apps, not web pages in a window, and they behave like it.

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Your data stays on your Mac

There is no account to make with us. Duplex keeps every instance in a local folder; Orlo keeps your mail in SQLite on your own disk.

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Works with what you already have

Nothing to migrate onto. Duplex wraps the apps you already installed; Orlo connects to the mailboxes you already use.

* tools that earn their place in the Dock.

We only ship tools that solve a problem we hit ourselves, starting with running two of everything.

Duplex app icon
macOS · $9

Duplex

Run a second copy of any Electron app, with its own login.
Orlo app icon
macOS · early access

Orlo

A native Mac mail client, no AI, for the accounts you already have.
Your itch?

Suggest a tool

Tell us the small Mac problem you hit every day.

At Aetrix, tools stay small on purpose. Every one starts from a real itch and ends in the Dock.

(01)

Ship small

A tool should do one job completely rather than ten jobs halfway. Duplex duplicates apps. Orlo sorts mail by who is waiting. Each of those is a whole job.

(02)

No AI in the way

Neither tool ships an assistant, a summary you did not ask for, or a model reading your data. Nothing we build needs to understand your content in order to work.

(03)

Honest pricing

Duplex is $9 once, and its first instance stays free. Orlo Pro is $5.99 a month, free while it is in early access. No countdown timers, no nag screens, no upsell modals.