Supercharge Claude Code with Cmux#claudecode

Source
claude-codecmuxterminal-multiplexerparallel-agentsmacosdeveloper-toolsai-coding

Summary

Cmux is a native macOS terminal app purpose-built for running multiple AI coding agents (Claude Code, Codex, Gemini CLI, etc.) in parallel with vertical tabs, split panes, and automatic notifications. It launched February 2026 and hit 7 700 GitHub stars in its first month, reflecting strong demand for multi-agent orchestration tooling.

Key Insight

  • Cmux is a Ghostty-based native macOS terminal with vertical tabs, split panes, an embedded browser, and a socket API - designed specifically for AI coding workflows
  • Notifications fire automatically via standard terminal escape sequences (OSC 9/99/777) or via the cmux CLI and Claude Code hooks - so you can kick off multiple agents and get alerted when each finishes
  • The multi-agent multiplexer space is heating up fast: alternatives include amux (tmux-based, browser/phone control, runs dozens of unattended agents), cmuxlayer (MCP server with spawn_agent/stop_agent tools), and NTM (named tmux manager with conflict detection and TUI dashboard)
  • Key workflow: spin up isolated Claude Code sessions per task (bug fix, feature, refactor), let them run in parallel, review results when notified - effectively multiplying your throughput without context-switching overhead
  • Works with any CLI tool, not just Claude Code - also supports Codex, OpenCode, Gemini CLI, Kiro, and Aider