Seahelm for Mac

Name: Seahelm
Author: BetaYao

Workspace for coding agents, git worktrees, and parallel development.

By BetaYao. Free and open source, MIT licence.

Get it with OpenDMG View source on GitHub

Seahelm at a glance

Version: 2.0.65
Released: 23 September 2026
Download size: 17 MB
Works on: Apple silicon and Intel
Licence: MIT
Category: Developer Tools
Developer: BetaYao
GitHub stars: 18

About Seahelm

A native macOS workspace for coding agents — every git worktree a row on one roster, one agent to a split pane. Built on Ghostty, sessions persist through zmx.

Screenshots

How to install Seahelm on a Mac

Get OpenDMG. It is a free app store for open source Mac apps. Download OpenDMG.
Search for Seahelm and press Get. OpenDMG downloads version 2.0.65 from BetaYao's own GitHub release.
Open it. The download is checked against its SHA-256 fingerprint and its signature is checked on your Mac before it lands in Applications.

Updates to Seahelm show up in OpenDMG and install with one button. No account is needed.

Prefer to do it by hand? The developer's files are on GitHub: seahelm-macos-arm64.zip (17 MB), seahelm-macos-x86_64.zip (17 MB).

What is new in Seahelm 2.0.65

## Install

### macOS (one-line install)

```bash
curl -fsSL https://seahelm.dev/install.sh | sh
```

### macOS (manual)

1. Download the zip for your Mac below and unpack it
 - `seahelm-macos-arm64.zip`: Apple Silicon
 - `seahelm-macos-x86_64.zip`: Intel
2. Drag `Seahelm.app` into `/Applications`
3. If macOS blocks the app on first launch, run:
 ```bash
 xattr -dr com.apple.quarantine /Applications/Seahelm.app
 ```
4. Launch Seahelm

Artifacts are notarized when the required Apple signing secrets are configured in this repository; the quarantine step is only needed for un-notarized builds.

## What's Changed
* feat: a Telegram topic covers a worktree, and the progress line carries prose by @BetaYao in https://github.com/BetaYao/seahelm/pull/162
* fix: retire a worktree's topic however the worktree went by @BetaYao in https://github.com/BetaYao/seahelm/pull/163

**Full Changelog**: https://github.com/BetaYao/seahelm/compare/v2.0.64...v2.0.65

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