Welcome to WSL Manager 👋

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_{Shown on Windows · the same app runs native VMs on macOS — expand See it on macOS below}

WSL Distro Manager is a free, open source GUI for the Windows Subsystem for Linux — and, on macOS, for native Linux VMs. Install, copy, rename, move, back up and delete WSL distros without memorising a single wsl.exe flag — plus templates, saved command snippets, disk mounting, .wslconfig editing, remote WSL over SSH, and an MCP server that lets AI agents drive your WSL environment. On a Mac the very same app manages virtual machines through Apple's Virtualization framework instead.

🚀 Features

Manage distros

• Install from a built-in catalogue, or bring your own rootfs
• Copy, rename, move to another drive, back up and delete instances
• Compact virtual disks to reclaim space WSL never gives back
• Supports Ubuntu, Debian, Alpine, Kali Linux, openSUSE, SLES and anything else WSL accepts

Get instances running faster

• Use any Docker image as a distro — Docker itself is not required
• Package a configured distro as a portable .wsl file that installs on any machine (templates are deprecated in favour of these)
• Turnkey Linux and other LXC containers (experimental)
• Snippets: keep your setup commands in the app and run them on any instance
• Point the app at your own repository of rootfs images

Configure without editing files by hand

• systemd, automount, default user, start command and start path per distro
• Memory, processors, swap, networking mode, DNS and the rest of .wslconfig
• Mount a physical disk or a VHD into WSL, with partition and filesystem control

Work the way you already do

• Open Windows Terminal, VS Code or Explorer straight inside a distro
• Manage WSL on a different Windows machine over SSH
• Sync a distro between two machines on your network
• Keeps itself up to date: the website and GitHub builds download and install new releases themselves (Store installs are updated by the Store)
• Dark and light themes, available in nine languages

On macOS: native virtual machines (beta)

• The same app manages VMs through Apple's Virtualization framework instead of WSL
• Create Linux VMs from an installer ISO, a cloud image or an exported template
• Create macOS guest VMs from a restore image (Apple Silicon)
• Start, stop, clone, export/import and template VMs like distros
• Run commands inside VMs over auto-provisioned SSH (cloud-init), from the GUI, the AI chat or MCP clients
• Your own ~/.ssh key is authorized in every Linux VM (and created if you have none), so plain ssh user@vm-ip works too
• Every VM gets a login password you can read back from its row, for signing in at the VM's own screen
• Build with scripts/build_macos.sh — bundles the signed vmctl helper

Pro (one-time purchase: Microsoft Store on Windows, licence key from wslmanager.com/buy on macOS and for non-Store installs — never a subscription)

• AI Workspace — run Hermes Agent, OpenClaw, Open WebUI and OpenCode in a dedicated, isolated WSL distro
• AI assistant with tools — the built-in chat can actually operate your WSL: it lists and inspects distros, runs commands, edits config, creates snippets, mounts disks and packages distros through the same tools the MCP server exposes
• Sandboxed AI — spin up a throwaway Ubuntu distro and give an AI chat access to only the inside of that sandbox
• Task queue — hand the assistant a checklist and let it work through it, ticking items off as it goes
• MCP server — expose WSL to Claude Desktop, Claude Code, opencode and other MCP clients
• Web dashboard — manage everything from your phone or another computer: scan a QR code, get the whole app in a browser, optionally published beyond your network through a Cloudflare tunnel

The AI features run on credentials you bring — your own OpenAI-compatible API key. No AI service is hosted or included, there is no quota, and no requests pass through anyone else's servers. Pro unlocks the features in the app; it does not buy AI credits. See Free vs Pro.

Why is there a paid tier at all? WSL Manager has been a one-person, spare-time project since 2021, and every feature above — the free ones included — was built in evenings and weekends. Managing your distros and VMs is free and stays free, and the whole app stays open source. Pro is the AI layer on top, and what it earns is what lets maintenance and new features become planned, regular work instead of whatever time is left over. Buy it once, keep it forever, and you are directly funding the next release.

🎁 Launch offer — the first 100 people get Pro for free. Open the checkout with the code START100 already applied and your licence key is on the next page: Windows · macOS. One licence per person; once the 100 are gone the code stops working.

🤖 AI assistant & MCP (Pro)

Everything in this section is part of Pro; the free app has none of it.

The AI assistant is an agent, not just a chat box: it is given the same tool set the MCP server exposes, so when you ask "what distros do I have?" or "install Ubuntu and set my default user" it calls real tools against your WSL rather than guessing. Tool calls are shown inline as it works.

Set up the provider in Settings → Bring Your Own AI Key: any OpenAI-compatible endpoint works (OpenAI, Azure, a LiteLLM proxy, Ollama, LM Studio, …). Enter the base URL, key and model. The Load model list button fills an autocomplete from the provider's /models, and Test connection proves the credentials work before you open the chat.

Sandboxes (AI Workspace → Add sandbox distro) create a throwaway instance from any catalog image (newest Ubuntu by default) — a WSL distro on Windows, a Linux VM seeded from a cloud image on macOS, which is created and booted for you. Its chat is handed only the sandbox_* tools, which are locked to that one instance — the model can run anything inside the sandbox and can never see your host or any other instance. One honest caveat: the sandbox itself has normal outbound internet access, like any distro or VM. Sandbox chats use the same docked panel as the assistant (task queue included), their transcripts persist, and the history button in the chat header switches between the assistant and any sandbox session.

Task queue — open the Tasks section at the top of the chat, add items, and press ▶. The assistant works through them with its tools and checks each off as it finishes; you can keep adding tasks while it runs.

Connecting external AI clients (MCP)

Turn on Settings → MCP Server (Pro). It serves the MCP protocol at http://127.0.0.1:59133/mcp, loopback-only, guarded by a bearer token shown in the same panel. The tools cover the full lifecycle — create, import, configure, run, package and (with a confirm flag) unregister distros, plus snippets, disk mounting and persistent terminal sessions.

Claude Desktop — click Connect Claude Desktop in the MCP panel. It writes the entry below into claude_desktop_config.json for you (needs Node.js); restart Claude Desktop afterwards. To do it by hand, or for any other stdio MCP client, bridge the HTTP endpoint with mcp-remote:

// claude_desktop_config.json  (%APPDATA%\Claude\)
{
  "mcpServers": {
    "wsl-manager": {
      "command": "npx",
      "args": [
        "-y", "mcp-remote",
        "http://127.0.0.1:59133/mcp",
        "--header", "Authorization:${AUTH_HEADER}"
      ],
      "env": { "AUTH_HEADER": "Bearer <TOKEN FROM THE MCP PANEL>" }
    }
  }
}

Claude Code — same bridge, one command:

claude mcp add wsl-manager -- npx -y mcp-remote http://127.0.0.1:59133/mcp \
  --header "Authorization: Bearer <TOKEN>"

opencode — add it under mcp in your opencode.json (or ~/.config/opencode/opencode.json):

{
  "mcp": {
    "wsl-manager": {
      "type": "local",
      "command": ["npx", "-y", "mcp-remote", "http://127.0.0.1:59133/mcp",
                  "--header", "Authorization: Bearer <TOKEN>"]
    }
  }
}

Any MCP client that speaks streamable HTTP can also point straight at the endpoint with an Authorization: Bearer <TOKEN> header, skipping mcp-remote. To reach it from another machine, enable the built-in Cloudflare tunnel toggle in the same panel and use the public URL it prints.

📱 Web dashboard (Pro)

Turn on Settings → Web Dashboard (Pro) and the app serves a browser dashboard on port 59134 for every device on your network — Windows and macOS alike. Scan the QR code the panel shows with your phone (or copy the link) and you get the whole app in a browser: start, stop, duplicate and delete instances, run commands, open persistent terminal sessions, run your saved snippets, and drive every other tool (import, export, packaging, .wslconfig, disks, VM creation) through generated forms. It is the same tool set the AI assistant and the MCP server use.

Access is guarded by a token that is part of the link (?token=…), so a scanned QR code is all a device needs — and regenerating the token in the panel revokes every link handed out so far. The dashboard binds to all interfaces on purpose; flip Publish via Cloudflare Tunnel in the same panel to get a temporary public HTTPS link (the QR code switches to it) when you need it away from home. Once published, the token is the only thing protecting a surface that can run commands, so share that link with care.

📦 Install

brew tap bostrot/tap
brew install --cask wsl-manager

winget install Bostrot.WSLManager

scoop install extras/wsl2-distro-manager

choco install wsl2-distro-manager

⚙️ Build

Make sure flutter is installed.

Windows

flutter config --enable-windows-desktop
flutter upgrade

flutter build windows # build it
flutter run -d windows # run it

macOS

VMs are created by vmctl, a small Swift helper that drives Virtualization.framework — not by the Flutter app itself. The framework only answers processes carrying the com.apple.security.virtualization entitlement, and swift build does not add it, so the helper must be built and signed before the app can start a VM:

flutter config --enable-macos-desktop

# Build + sign vmctl and install it for dev runs. Re-run after any change
# under macos/vmctl/ — `flutter run` never rebuilds the helper.
VMCTL_ONLY=1 scripts/build_macos.sh

flutter run -d macos

Skip that step and the app launches fine, but starting a VM fails with:

VM failed to start: Error Domain=VZErrorDomain Code=2 "The process doesn't
have the "com.apple.security.virtualization" entitlement."

That is the helper missing the entitlement, not the app — Runner's own entitlements are already correct. The signed helper is installed to ~/Library/Application Support/WSLManager/bin/vmctl, which is where debug runs look for it; without it they fall back to the unsigned swift build output under macos/vmctl/.build/, which is what produces the error above.

scripts/build_macos.sh without VMCTL_ONLY does the same signing and then builds the release app, bundling the signed helper into the bundle's Contents/Resources/. Building the app itself needs full Xcode.

Author

👤 Eric Trenkel

• Website: erictrenkel.com
• GitHub: @bostrot
• LinkedIn: @erictrenkel

👥 Contributors

🤝 Contributing

Contributions, issues and feature requests are welcome!
Feel free to check the issues page. You can also take a look at the contributing guide.

Show your support

Give a ⭐️ if this project helped you!

📝 License

Copyright © 2026 Eric Trenkel.
This project is GPL-3.0 licensed.

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