Routers & Switches
Use the solution with the most accurate behavior!
NetSim simulates IOS and the hardware to deliver real-world behavior. Unlike other solutions, NetSim accurately handles switches and Layer 2.


Runs on desktops, laptops, tablets, etc.
NetSim can be used on all modern web browsers and devices including Macs, Linux and Windows.
Network Designer
Build your own custom labs.
- Easily configure complex topologies.
- Add devices and connections to the topology.
- Click and drag to rearrange devices.
- Annotate topologies with notes and labels.
- Import your own device icons to customize your lab.
- Save your favorite device configurations for quick access.


Dark Mode
No worries, night owls!
Dark mode for NetSim is now available exclusively in our online app.
Sync Lab History
Pick up where you left off.
You can sync your lab progress to easily dive back in, as your schedule permits. You can also sync your history between your devices.


Multi-Monitor Support
Also works with Split View!
Easily launch the lab document, topology diagram and consoles in separate browser tabs.
Content Updates
Never wait on updates!
With the online app, you’ll never have to run updates. Always have the most up-to-date content and IOS just by simply logging in.










