# coder/xum

A desktop app for isolated, parallel agentic development

Repository: https://github.com/coder/xum
Canonical: https://ross.abutalabs.com/products/xum
Homepage: https://xum.coder.com
Language: TypeScript
License: AGPL-3.0
License Family: copyleft
Topics: ide, agent
Last push: 2026-08-26T20:53:51+00:00

## Health v2 (maintenance only)
Score: 79/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 85, longevity 25
- inputs: {"age_days": 350, "days_push": 7, "days_rel": 21, "gap_med": 2, "n_releases_24m": 64}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1985, forks 135 (observed 2026-08-28T04:06:02.022364+00:00)

## What it is
Xum (formerly Mux) is an open-source desktop application for running multiple AI coding agents in parallel, each in its own isolated workspace (local, git worktree, or SSH remote). It is LLM provider-agnostic with multi-model support, integrates with VS Code, Cursor, Zed, Neovim, and JetBrains via ACP, and offers a central UI for managing agent suites with rich markdown output.

## Use cases
- run multiple coding agents in parallel on isolated git worktrees
- manage a suite of AI coding agents from one desktop UI
- run long-running agent refactors in the background and resume after restarts
- compare several model answers to the same coding task with Best of N
- connect coding agents to editors like VS Code, Zed, Neovim, or JetBrains via ACP
- use local LLMs with Ollama for offline coding assistance
- review agent-generated code changes with integrated code review
- execute agents on a remote server over SSH

## When to choose
- you want to parallelize AI coding work across isolated workspaces with git divergence visibility
- you need provider-agnostic multi-model support including local models via Ollama
- you prefer a desktop GUI with keyboard-driven agent management over a single terminal agent
- you want editor integration (VS Code, Zed, Neovim, JetBrains) for the last mile of agent tasks
- you run agents on remote servers and need SSH-based workspaces

## When to avoid
- you only need a simple single-agent CLI like Claude Code without workspace management
- you require full Windows support - it is still in alpha
- you need a fully managed commercial product with SLA rather than an AGPL-3.0 open-source tool
- your workflow does not involve git or coding tasks

## Facets
- artifact type: application
- maturity: active
- function: agent-framework, llm-inference, chat-interface, developer-tools, version-control, code-review, editor, terminal-ui
- domain: large-language-models, developer-tools, version-control
- platform: windows, cross-platform, editor-plugin, cli
- tags: coding-agent-multiplexer, git-worktrees, parallel-agents, acp, vscode-extension, ollama, openrouter, ssh-workspaces, provider-agnostic, agpl-3.0, ai-agents, automation, macos, linux, desktop

## Member repositories
- coder/xum (main) score 79

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:02.022364+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:03:16.324392+00:00, confidence not recorded.
  - readme: https://github.com/coder/xum (fetched 2026-08-28T04:06:02.022364+00:00, sha e6928aecbbc3)
  - homepage: https://xum.coder.com (fetched 2026-08-29T10:43:23.828442+00:00, sha fbc6ebaea77c)
  - site_page: https://xum.coder.com/install (fetched 2026-08-29T10:43:23.837595+00:00, sha 9607e8b3552b)
  - site_page: https://xum.coder.com/getting-started/why-parallelize (fetched 2026-08-29T10:43:23.839869+00:00, sha 8d6223e8ba8b)
  - site_page: https://xum.coder.com/getting-started/mux-gateway (fetched 2026-08-29T10:43:23.841775+00:00, sha b483a235750e)
  - site_page: https://xum.coder.com/integrations/vscode-extension (fetched 2026-08-29T10:43:23.843595+00:00, sha 3a9940cadf5a)
  - site_page: https://xum.coder.com/integrations/acp (fetched 2026-08-29T10:43:23.845310+00:00, sha c04d9c77d9df)
- Data as of 2026-08-30T08:39:29.467469+00:00.