Heimdall

Build more

Talk to your Mac. Every job you mention starts at once.

Download for Mac

AlphaFree and open source, Apache-2.0. For Macs with Apple silicon.

Say it. Heimdall does it.

You say it.
Out loud, in your own words.
An agent takes it.
One agent and one island per job.
It asks only when it must.
A choice waits for one click.

A Landing page job island: the page's picture, score 7.8 and two judges' lines.

A Nightly build job island: 136 tests pass, with its steps as pills.

A picture for every job.

Each island draws what matters: a score, a frame, a count.

…and the demo is on Friday. Can you check the fine-tune? Yeah, the build passed.

No wake word.

Its own model, D1 V6, hears when you mean it.

The notch reading a reply out loud: the build is green.

Answers out loud.

The Scheduled island: nothing waiting on you, and four items counting down.

Your plan, on the left.

Goals and Scheduled keep themselves current.

A Film restore job island: an 1897 frame, 212 of 480 frames, Clean done and Colour running.

Local models, through Arsenal.

Speech, images and film run on your Mac with Arsenal 1.0.2.

Your voice never leaves your Mac.

On your Mac

Microphone
Speech to text
Who is speaking
When to wake the agent
Spoken replies
Memory search
Every recording

Your agent provider

The words of your request
Transcript text, for the background jobs you turn on
A screenshot, when you say “look at this”

With a local model, only the downloads you start.

Recordings sit in a folder you choose, and you can delete it any time.
No analytics. The agent's telemetry is switched off.
Open source, so you can check every line above.

A Mac, and a subscription or a local model.

A Mac with Apple silicon

ClaudeChatGPTA Claude or ChatGPT subscription

48 GB+A local model, on a Mac with 48 GB of memory or more

Nothing else to buy. Setup installs T3 Code for agent jobs if you don't have it.

Free, and the code is yours.

Homebrew

brew install --cask tobynoskillson/tap/heimdall-alpha

Download

Heimdall for Mac

Source

View on GitHub

Setup

Setup guide

Apache-2.0. Written in Rust, native on macOS, with every model runner inside the app.

Questions

Is it really free?

Yes. Heimdall is free and open source under Apache-2.0. You pay only for the agent subscription you already have, or nothing at all with a local model.

Is it always recording?

It listens all day so it can hear its name and remember what was said. Recordings and transcripts stay on your Mac, in a folder you pick. Nothing is deleted for you, and you can delete it yourself at any time.

What leaves my Mac?

Text, never audio. Your agent provider gets the words of your requests, the transcript text that background jobs like Goals read, and a screenshot when you say “look at this”. With a local model, only the downloads you start leave the Mac.

Which agents can it use?

Claude Code through T3 Code, Codex with your ChatGPT sign-in, or a local model on the built-in engine. Jobs handed to T3 Code use Claude Code or Codex.

Which languages does it understand?

English, and Polish speech too. Spoken replies are in English.

Which Macs does it run on?

Macs with Apple silicon on macOS 14.4 or later; macOS 26 is recommended.

When can I get it?

Now, as an alpha. The download and the code are on GitHub.