A crew of coding agents,
on all your Macs.

byre runs Claude Code, Codex and Antigravity side by side on one Mac, each on its own branch and worktree, with a lead agent that watches them all and tells you what needs you. Pick up from whichever Mac you're at.

Download for macOS

What it does

• One server, every Mac

  The agents run on one Mac that stays on, such as a Mac mini in a closet. Open byre on your laptop, your desk Mac, or all of them at once: each shows the same tasks, questions and transcripts live. Close the laptop and the agents keep working.

• Every server, every project

  Your servers sync through iCloud, so a new Mac finds them on first launch. Switch between servers in one window, each with as many projects as you like and its own colour.

• Tasks

  Every task gets its own git worktree, branch and port block. Talk to its agent in a live transcript, even mid-turn.

• Lead agent

  One long-running agent watches every task, points you at what needs you, and starts, messages, merges or discards tasks when you ask.

• Questions, not interruptions

  When an agent needs a decision, it lays out the options and recommends one. Pick an answer in the inbox or right from the notification, and the agent carries on.

• Cross-vendor reviews

  Every turn that changes files is reviewed by the other vendor's model. The agent fixes the findings it agrees with on its own and says why it skips the rest; you can overrule any of them with a click.

• One-click merge

  The agent merges main in and resolves conflicts, then byre squashes, pushes and closes the task.

• Snapshots and forks

  Step through a task's snapshots, diff any of them, and fork a new task from any one, conversation included.

• Teams and workflows

  Agents spawn subtasks or share a worktree as a team. Workflows chain stages with fan-out and fan-in.

• Hands on your Macs

  Agents can see and drive the Mac byre runs on, and the Macs you have the app open on, when a task needs it.

Getting started

1. Download byre and click Run byre on this Mac.
2. Open it on every other Mac you own. Your crew is already there.