Best network simulators and emulators
Apps for building virtual networks of routers, switches and firewalls to study for certifications, test designs or rehearse changes before touching real gear.
3 apps, ordered by visits from AppBreakup and how often our research lists each one as an alternative. Open any app to see its alternatives.
All network simulators and emulators
- Alternatives to GNS3
Free, open-source network emulator for building virtual labs of real router and switch images.
Open sourceSelf-hostableWindows, macOS, Linux, Self-hosted - Alternatives to EVE-NG
Multivendor network emulation platform run as a server and managed from the browser.
Free plan + paidSelf-hostableWeb, Self-hosted - CiAlternatives to Cisco Modeling Labs
Cisco's network simulation platform with licensed Cisco images, a web UI and an API.
Free plan + paidSelf-hostableWeb, Self-hosted
Our picks by need
Common questions
What are the best network simulators and emulators?
Based on how often our research lists them as alternatives and visits from AppBreakup, the leading network simulators and emulators right now are GNS3, EVE-NG and Cisco Modeling Labs.
Are there free network simulators and emulators?
Yes. GNS3 (open source), EVE-NG (free plan + paid) and Cisco Modeling Labs (free plan + paid) have a free option, out of 3 free or freemium apps we track.
Which network simulators and emulators are open source?
GNS3.