Berthd

Agents that keep working when your laptop sleeps.

Berth runs Claude Code, Codex and other coding agents on your own dev boxes. Work with them from your laptop; close it, and they keep going.

Download for macOS Try the live demo

For Apple silicon and Intel Macs, signed and notarized. Open source. How to get started

Press ⌘N and say what you want. Berth makes a worktree on the box you choose and starts Claude Code, Codex or another agent in it, with its dev server in a tab of its own.

Commands and reads fold into a line, and edits arrive as diffs. When Claude asks, you answer in place; what it publishes is one click away.

Two worktrees share the tab strip as groups, each in its own colour, and split into one tab. Compare puts them in mirrored lanes: their chats, their diffs, their terminals.

Berth's own themes and nineteen ports of favourites, Dracula to Rosé Pine, carried into the terminal and every diff. A chat background of your own, and ⌘+ when you want it larger.

The agents run on your boxes, not on your laptop. Close it and they keep working; open it in the morning and what they did is there.

devl · 2 agents workinggpu · 1 agent working

The app for your Mac, and berthd on each box. Free and open source.