free/beta/macOS · Windows

Run many Claude Code agents in parallel, each in its own container, on its own branch.

Peck is a desktop app. Start a project, say what it's for, and Peck creates a branch, builds a firewalled dev container and opens Claude Code inside it, ready to work. Do that five times and you have five agents working five branches side by side, with no shared state to trip over.

Latest release · All versions and release notes

Peck runs on macOS and Windows. Open this page on your computer to install it.

• Isolated workspacesEvery workspace is a git worktree inside its own dev container. Nothing an agent does leaks into another branch or onto your machine.
• A firewall that contains your agentsContainers reach only the domains you allow. An agent can ask for a new one; only your click in Peck grants it.
• Friendly for new developersNo toolchain to assemble: Peck brings its own git, container engine and everything Claude Code needs, on Mac and Windows. Sign in to GitHub and go.
• Themable, scriptableThe app chrome, terminal palette and Claude Code theme are plain JSON. Change them from the sidebar, or let an agent do it with the peck CLI.

Requires macOS 13 or later on Apple Silicon, or Windows 11 (64-bit), plus a Claude account for Claude Code.
Beta means rough edges. Installed apps update themselves as fixes ship.

Installing on Windows

Peck's installer is signed by DEVLIN.AI LLC. Because Peck is new, Windows may still show a blue "Windows protected your PC" box when you open it. Click More info, then Run anyway.

During setup Windows will ask for permission a couple of times. Choose Yes. Your PC needs one restart, and Peck picks up where it left off when you sign back in.

Some PCs also need a virtualization setting turned on in their startup settings. If yours does, Peck tells you and walks you through it.