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Head-to-head · Network Simulation Software

OMNeT++ vs ns-3

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score OMNeT++ #5 in Network Simulation Software 8.8/10 Free plan · pricing on request Free plan✓ 3 of 3 features Visit OMNeT++
ns-3 #6 in Network Simulation Software 8.7/10 Free plan Free plan✓ 2 of 3 features Visit ns-3

OMNeT++ leads on 0 checks, ns-3 on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreOMNeT++ · 8.8/10
  • Free planboth
  • Most featuresOMNeT++ · 3 of 3

OMNeT++ scores higher on our rubric for network simulation software: 8.8 against 8.7 out of 10; our editors rank them #5 and #6.

OMNeT++ is the better fit for mature academic and engineering simulation. ns-3 is the better fit for open-source discrete-event research.

  • OMNeT++ fits best

    Mature academic and engineering simulation

  • ns-3 fits best

    Open-source discrete-event research

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Side by side

Feature OMNeT++ 8.8/10 Visit ↗ ns-3 8.7/10 Visit ↗
At a glance
Editor score 8.8 8.7
Ranking #5 in Network Simulation Software #6 in Network Simulation Software
Best for Mature academic and engineering simulation Open-source discrete-event research
Pricing model Free plan + paid Free
Starting price Free plan · pricing on request Free plan
Free plan ✓ ✓
Free trial — —
Deployment Desktop Desktop
Platforms Windows, macOS, Linux Windows, macOS, Linux
Support Email, Community, Docs Community, Docs
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features OMNeT++ 3/3 · ns-3 2/3
Real-time emulation ✓ ✓
Hardware-in-the-loop ✓ (best) Not checked yet
Automation API ✓ ✓
Specs
Simulation model Discrete-event Discrete-event
Deployment options Desktop Desktop
Documented node limit Not checked yet Not checked yet
Our review
Pros
  • NED and C++ support hierarchical, modular network modeling
  • Desktop IDE plus graphical and command-line execution
  • Distributed, real-time, emulation and Python automation support
  • Free and open source for research and education
  • Broad wireless, IP, routing, mobility, and device models
  • Real-time, tracing, visualization, and MPI support
Cons
  • Commercial use requires a commercial license
  • Commercial licensing is handled through OMNEST
  • The framework is more technical than narrow-purpose simulation tools
  • Desktop deployment without a web interface
  • Scenario development uses C++ or Python programs
  • Integrations are limited to a focused set of tools
Our verdict

OMNeT++ is an open-source, modular C++ simulation library and framework for building network simulators. Its discrete-event model supports wired and wireless networks, on-chip networks, queueing networks and other distributed systems.…

Read the review →

ns-3 is a free, open-source discrete-event network simulator for Internet systems. It is aimed primarily at networking research and education, supporting models for IP and non-IP networks, wireless technologies, routing, applications,…

Read the review →
  1. OMNeT++Network Simulation Software 8.8Free plan · pricing on request
  2. ns-3Network Simulation Software 8.7Free plan

Strengths and trade-offs

  • OMNeT++ — where it wins

    • NED and C++ support hierarchical, modular network modeling
    • Desktop IDE plus graphical and command-line execution
    • Distributed, real-time, emulation and Python automation support

    Where it doesn't

    • Commercial use requires a commercial license
    • Commercial licensing is handled through OMNEST
    • The framework is more technical than narrow-purpose simulation tools

  • ns-3 — where it wins

    • Free and open source for research and education
    • Broad wireless, IP, routing, mobility, and device models
    • Real-time, tracing, visualization, and MPI support

    Where it doesn't

    • Desktop deployment without a web interface
    • Scenario development uses C++ or Python programs
    • Integrations are limited to a focused set of tools
  • OMNeT++8.8/10 · Free plan · pricing on request

    A mature, broad network simulation framework for academic and engineering teams.

    Visit OMNeT++Full verdict →
  • ns-38.7/10 · Free plan

    A free, research-focused simulator with broad network models and desktop-based workflows.

    Visit ns-3Full verdict →

More comparisons

All network simulation software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update