wmux

The terminal multiplexer Windows deserves.

Split panes. Tabbed workspaces. A socket API for AI agents. A native desktop app for Windows. Built with Rust and Tauri.

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 ┌──────────────────────────────────────────────────┐
 │ [ Project ] [ API ] [ Tests ]             [ + ]  │
 ├────────────────────────┬─────────────────────────┤
 │                        │                         │
 │  PS C:\project> _      │  PS C:\api> cargo test  │
 │                        │  running 75 tests...    │
 │                        │  test result: ok        │
 │                        │                         │
 ├────────────────────────┴─────────────────────────┤
 │ Shell: pwsh | WS: Project | Pane: 1 | CPU: 0.2%  │
 └──────────────────────────────────────────────────┘

Why wmux?

Windows developers have been asking for a native terminal multiplexer for years. wmux is a high-performance desktop application that brings the power of tmux to Windows with a modern, graphical interface.

wmux is the answer. A native .exe that gives you:

• Graphical Split Panes — vertical and horizontal, infinitely nestable
• Tabbed Workspaces — switch contexts with a clean, modern UI
• AI-First Socket API — a JSON-RPC interface that lets AI coding agents (Claude Code, Cursor, Copilot) control your terminal sessions programmatically
• Native Performance — Built on ConPTY (Windows' native pseudo-terminal) for maximum compatibility and speed

Quick Start

Download

Grab the latest release from the Releases page.

Build from Source

# Requires Rust and Tauri CLI
git clone https://github.com/fernandomenuk/wmux.git
cd wmux/crates/wmux-app
cargo tauri build

The app will be available in target/release/wmux-app.exe.

Key Features

Modern UI

• Sidebar Navigation: Manage all your workspaces at a glance.
• Workspace Controls: Create, rename, and close workspaces without leaving the keyboard-first flow.
• Command Palette: Quick actions with Ctrl+Shift+P.
• Customizable Layouts: Drag and drop support coming soon.

Socket API

wmux exposes a JSON-RPC API over a Windows named pipe at \\.\pipe\wmux. This is what makes wmux special — AI agents can control your terminal sessions programmatically.

Connect (PowerShell)

$pipe = New-Object System.IO.Pipes.NamedPipeClientStream(".", "wmux", [System.IO.Pipes.PipeDirection]::InOut)
$pipe.Connect(5000)

Protocol

Newline-delimited JSON-RPC. Compatible with cmux v2 format.

Method	Description
workspace.create	Create a new tabbed workspace
workspace.close	Close a workspace by ID
surface.split	Split the current terminal pane
surface.send_text	Send commands to a terminal

Architecture

wmux is built with a modular architecture:

• wmux-core: The engine handling PTYs, layouts, and state.
• wmux-app: The Tauri-based desktop interface.
• wmux-cli: A legacy terminal-based interface (archived).

Roadmap

• Graphical Split panes
• Tabbed workspaces
• JSON-RPC socket API
• Command Palette
• Drag-and-drop pane resizing
• Theme support (Light/Dark/Custom)
• Session persistence (Detach/Reattach)

License

MIT

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Built for Windows developers who are tired of waiting.

If wmux helps you, star the repo.