muxplex

Web-based tmux session dashboard — access and manage all your tmux sessions from any browser or mobile device.

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Features

• Live session grid — thumbnail snapshots of every running tmux session, auto-refreshed
• Full interactive terminal — click any session to open a real terminal (powered by ttyd + xterm.js)
• Collapsible session sidebar — quick-switch between sessions without leaving the terminal view
• Bell & activity notifications — visual alerts when any session rings a bell or has new output
• Mobile-friendly responsive layout — works on phones and tablets; PWA-capable for home-screen install
• Works over Tailscale / private network — serve to any device on your network without exposing to the internet

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Prerequisites

• Python 3.11+ — installed via uv or system Python
• tmux — terminal multiplexer
  • macOS: brew install tmux
  • Ubuntu/WSL: sudo apt install tmux
• ttyd — terminal sharing over HTTP (required for interactive terminal access)
  • macOS: brew install ttyd
  • Ubuntu/WSL: sudo apt install ttyd or sudo snap install ttyd
  • Other: https://github.com/tsl0922/ttyd#installation

Tip: muxplex checks for tmux and ttyd at startup and prints install instructions if either is missing.

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Quick Start (uvx — no install)

Run muxplex directly without installing anything permanently:

uvx --from git+https://github.com/bkrabach/muxplex muxplex

Then open http://localhost:8088 in your browser.

Note: uvx is part of uv. Install uv with curl -LsSf https://astral.sh/uv/install.sh | sh.

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Install Permanently

Install muxplex as a persistent CLI tool using uv tool:

uv tool install git+https://github.com/bkrabach/muxplex

Then run it any time with:

muxplex

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Install as a Service

muxplex service install

The service starts automatically on login (macOS) or at boot (Linux) and restarts on failure.

To stop and remove:

muxplex service uninstall

Note: All service commands use the muxplex service subcommand — see Service management below.

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Usage

muxplex [OPTIONS]
muxplex serve [OPTIONS]     # explicit form

All serve options read from ~/.config/muxplex/settings.json by default. CLI flags override for that run only.

Option	settings.json key	Default	Description
--host HOST	host	127.0.0.1	Interface to bind (0.0.0.0 for network access)
--port PORT	port	8088	Port to listen on
--auth MODE	auth	pam	Auth method: pam or password
--session-ttl SEC	session_ttl	604800	Session TTL in seconds (7 days; 0 = browser session)

Other commands

Command	Description
muxplex doctor	Check dependencies and system status
muxplex upgrade	Upgrade to latest version and restart service
muxplex show-password	Show the current muxplex password
muxplex reset-secret	Regenerate signing secret (invalidates sessions)

Service management

muxplex service install     # Write service file + enable + start
muxplex service uninstall   # Stop + disable + remove service file
muxplex service start       # Start the service
muxplex service stop        # Stop the service
muxplex service restart     # Stop + start
muxplex service status      # Show running/stopped + PID
muxplex service logs        # Tail service logs

The service runs muxplex serve with no flags — it reads all options from ~/.config/muxplex/settings.json. To change host/port, edit the config and restart:

# Edit settings to bind to all interfaces
# (or use the Settings UI in the browser)
muxplex service restart

Examples

# Start with defaults from settings.json
muxplex

# Override port for this run only
muxplex --port 9000

# Override host for this run only
muxplex serve --host 0.0.0.0

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Development

Setup

git clone https://github.com/bkrabach/muxplex
cd muxplex

# Install with dev dependencies
uv pip install -e ".[dev]"

Run the server

muxplex
# or directly:
python -m muxplex

Run tests

# Python tests (pytest)
pytest

# JavaScript tests (node:test)
node --test muxplex/frontend/tests/test_terminal.mjs
node --test muxplex/frontend/tests/test_app.mjs

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Architecture

muxplex/
├── pyproject.toml          # Package metadata, entry points, dependencies
├── README.md               # This file
├── scripts/                # Utility scripts (asset generation, etc.)
│   └── render-brand-assets.py
├── assets/
│   └── branding/           # Brand design system and generated assets
│       ├── DESIGN-SYSTEM.md
│       ├── tokens.json / tokens.css
│       ├── svg/            # Source SVG files
│       ├── og/             # Open Graph images (og-dark.png, og-light.png)
│       ├── icons/          # App icons
│       ├── favicons/       # Favicon variants
│       ├── pwa/            # PWA manifest icons
│       ├── lockup/         # Wordmark + icon lockup
│       └── wordmark/       # Text-only wordmark
└── muxplex/                # Python package
    ├── __init__.py
    ├── __main__.py         # `python -m muxplex` entry point
    ├── cli.py              # CLI entry point and subcommand dispatch
    ├── main.py             # FastAPI app: session API, bell hooks, WebSocket proxy to ttyd, static frontend
    ├── sessions.py         # tmux session discovery and snapshot capture
    ├── bells.py            # Bell/activity notification tracking
    ├── ttyd.py             # ttyd process lifecycle management (spawn, kill, PID tracking)
    ├── state.py            # Shared in-process state (sessions, bells, ttyd)
    ├── frontend/           # Static frontend assets (served as package data)
    │   ├── index.html
    │   ├── app.js
    │   ├── terminal.js     # xterm.js + WebSocket terminal init
    │   ├── style.css
    │   ├── manifest.json   # PWA manifest
    │   └── tests/          # JavaScript unit tests
    └── tests/              # Python tests (pytest)

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Brand Assets

Design language, color tokens, and brand assets live in assets/branding/. See assets/branding/DESIGN-SYSTEM.md for the full design reference.

To regenerate PNG/favicon assets from SVG sources:

python3 scripts/render-brand-assets.py