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The GUI
for containerlab.

Draw a network, deploy it, and look inside it. In VS Code, on your desktop, or in your browser.

Read the docs Try the sandbox 

name: fabric
 
topology:
  defaults:
    kind: nokia_srlinux
    image: ghcr.io/nokia/srlinux:latest
 
  nodes:
    spine1:
      type: ixrd3
    spine2:
      type: ixrd3
    leaf1:
      type: ixrd2
    leaf2:
      type: ixrd2
    leaf3:
      type: ixrd2
    client1:
      kind: linux
      image: ghcr.io/srl-labs/network-multitool:latest
    client2:
      kind: linux
      image: ghcr.io/srl-labs/network-multitool:latest
    client3:
      kind: linux
      image: ghcr.io/srl-labs/network-multitool:latest
 
  links:
    - endpoints: [spine1:e1-1, leaf1:e1-49]
    - endpoints: [spine1:e1-2, leaf2:e1-49]
    - endpoints: [spine1:e1-3, leaf3:e1-49]
    - endpoints: [spine2:e1-1, leaf1:e1-50]
    - endpoints: [spine2:e1-2, leaf2:e1-50]
    - endpoints: [spine2:e1-3, leaf3:e1-50]
    - endpoints: [leaf1:e1-1, client1:eth1]
    - endpoints: [leaf2:e1-1, client2:eth1]
    - endpoints: [leaf3:e1-1, client3:eth1]
This is the real editor's renderer. Select a node to find it in the YAML.

From drawing to a running network

The topology file stays the source of truth. The app is a faster way to write it, run it, and debug it.

Draw

Drag nodes in, connect interfaces, or write YAML. Both views stay in sync.

Build a topology

Deploy

Deploy, apply changes, redeploy, or destroy from one button.

Run a lab

Get in

A shell, SSH, or the logs of any node, one right-click away.

Troubleshoot

Capture

Wireshark on any link, streamed from the lab host. Nothing to install locally.

Capture packets

Break things

Add delay, jitter, loss, or rate limits to a link and watch the network react.

Impair a link

Share

Export SVG or a Grafana dashboard, work on shared labs, or embed live diagrams like these.

Export

Runs where your labs are

Labs run on Linux next to Docker. Pick the app that gets you there.

# Diagram only: how the apps reach a lab host. Not a deployable lab.
name: architecture
 
topology:
  nodes:
    vs-code: {kind: linux}
    desktop-app: {kind: linux}
    browser: {kind: linux}
    web-app: {kind: linux}
    containerlab: {kind: linux}
    clab-api-server: {kind: linux}
    spine: {kind: linux}
    leaf1: {kind: linux}
    leaf2: {kind: linux}
 
  links:
    - endpoints: [spine:e1-1, leaf1:e1-49]
    - endpoints: [spine:e1-2, leaf2:e1-49]

VS Code

Runs containerlab where VS Code runs: locally, in WSL, or over Remote SSH.

Install the extension

Desktop

A native app for Linux, macOS, and Windows that signs in to your lab hosts.

Get the desktop app

Web

One container, every browser on your team, several lab hosts.

Run the web app

Deploy a tiny lab and ping across it.

Start the quick start