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Coding Desktop

Xum

Run parallel coding agents, each in its own isolated workspace

Free Coding Desktop Open Source
Listing checked 12 Oct 2026
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Overview

Xum (formerly Mux) is an open-source desktop app from Coder for isolated, parallel agentic development. Each agent works in its own workspace, running locally, in a Git worktree or over SSH, with a central view of how each workspace's Git branch has diverged. Xum is provider-agnostic: use models from Anthropic, OpenAI, xAI and others, local models through Ollama, or OpenRouter. It has keybinds for managing many agents, a Plan and Exec mode, vim-style input, rich markdown output with Mermaid diagrams and LaTeX, and a VS Code extension for jumping into workspaces.

Pricing: Free (open source, AGPL-3.0); bring your own model provider

Minimum macOS: 13.0 (Ventura)

Architecture: Apple Silicon, Intel

Key Features

  • Run parallel coding agents, each in an isolated workspace
  • Local, Git worktree and SSH workspace runtimes
  • Central view of each workspace's Git divergence
  • Provider-agnostic: Anthropic, OpenAI, xAI, Ollama and OpenRouter models
  • Plan and Exec mode, vim inputs and context compaction
  • Rich markdown output with Mermaid diagrams and LaTeX
  • VS Code extension for jumping into workspaces

Tags

code generationchat

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