Open sourceTypeScript · ≈2.1k stars · AGPL-3.0
Xum (formerly Mux)
Coder's open-source coding-agent multiplexer for isolated, parallel agentic development.
Xum, renamed from Mux after a trademark concern, is an AGPL-3.0 desktop and browser app from Coder Technologies for running multiple coding agents in parallel, each in an isolated workspace with a central view of git divergence. Workspaces can run locally, in git worktrees, or on remote servers over SSH. It is multi-model and provider-agnostic, supports Ollama for local LLMs, and offers keybinds for managing many agents plus rich markdown output including Mermaid and LaTeX.
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Connections
Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.
Maintained by · 1
- CoderStartup
Sources
Verified Oct 29, 2026