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1. [Software Factory Directory](/software-factories.md)
2. [Agent orchestration](/software-factories/category/agent-orchestration.md)
3. Contrabass

# Contrabass

[Agent orchestration](/software-factories/category/agent-orchestration.md) Open source

[Visit website ](https://contrabass.dev/)[View on GitHub](https://github.com/junhoyeo/contrabass)

Go reimplementation of OpenAI Symphony that runs one git worktree per issue.

## Overview

Contrabass is a reimplementation of OpenAI Symphony written in Go with the Charm libraries. It handles each issue in its own git worktree, keeping parallel pieces of work isolated from one another.

It is a solo open-source project by Junho Yeo, released under the Apache-2.0 license. There is no hosted version or paid plan.

## Features

* Reimplements OpenAI Symphony in Go with Charm.
* Works on one git worktree per issue.

## Details

* Website

  [contrabass.dev](https://contrabass.dev/)

* Company

  Contrabass (Junho Yeo)

* Category

  [Agent orchestration](/software-factories/category/agent-orchestration.md)

* Source

  Open source

* Repository

  * [github.com/junhoyeo/contrabass](https://github.com/junhoyeo/contrabass) · 224 stars

* License

  Apache-2.0

* Commercial offering

  None found

* Topics

  * [Git worktrees](/software-factories/?tag=git-worktrees)
  * [Issue to pull request](/software-factories/?tag=issue-to-pr)
  * [CLI](/software-factories/?tag=cli)

* Listed

  October 2026

* Last verified

  October 2026

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[All agent orchestration](/software-factories/category/agent-orchestration.md)