No. 13 of 29 ·Network Simulation Software

NetSim by Tetcos

Windows

Freedom report

Two barsScore 6.4

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

NetSim by Tetcos is ranked #13 of 29 in network simulation software on Freedom251. It runs on Windows. There is a free plan.

NetSim by Tetcos plans and pricing

All plans

NetSim Lite Free free Free for individual use support.tetcos.com · 1 Oct 2026

NetSim Academic Not published 100 nodes · 35+ inbuilt lab experiments · academic pricing tetcos.com · 1 Oct 2026

NetSim Standard Not published 500 nodes · protocol source C code · Python, MATLAB, SUMO, Wireshark interfaces · emulator tetcos.com · 1 Oct 2026

NetSim Pro Not published 5000 nodes · all technology libraries · priority support · Cyber and Astra add-ons tetcos.com · 1 Oct 2026

Compared on network simulation software

Free plan: Yes
Simulation model: discrete-event
Real-time emulation: Yes
Hardware-in-the-loop: Yes
Deployment options: desktop
Documented node limit: 100 nodes
Automation API: Yes

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The record

Core purpose: NetSim is a packet-level, discrete-event network simulator and emulator for wired and wireless communication networks.
5G and 6G: NetSim models end-to-end 5G/6G networks with gNB, UE, 5G Core, MIMO, beamforming, network slicing, and configurable propagation.
Protocol source: Every layer of the 5G stack ships with C source code that users can modify to build custom protocols.
Python interface: An external Python interface supports automation, AI/ML workflows, and run-time control.
Integrations: NetSim Standard and Pro interface with Python, MATLAB, SUMO, and Wireshark.
Hardware emulation: The NetSim Emulator connects simulations to real hardware and live applications, with traffic passing through configured delay, loss, and error conditions.
Cybersecurity: NetSim Cyber provides a network and attack-emulation layer for power-system cyber-physical testbeds.
Power-system integrations: NetSim Cyber directly interfaces with OPAL-RT, RTDS, HYPERSIM, PSCAD, MATLAB/Simulink, Typhoon HIL, OpenPMU, and openPDC.
License security: Cloud licensing exchanges only license-handshake data, while simulation data and user files remain local.
On-premises licensing: On-premises floating licensing keeps communication within the customer network and can operate without internet after initial setup.
Support: Tetcos offers technical support through tickets, email, and phone, and states that replies arrive within 24 hours.
Target users: Tetcos lists universities, defence labs, telecom operators, and research groups as NetSim users.
Academic capabilities: NetSim Academic includes an easy-to-use GUI, packet animation, dynamic plots, a results dashboard, and 35+ inbuilt labs.
Windows requirement: The emulator setup specifies a dedicated system running NetSim on Windows 10 or 11.
Price from: Free

Where it ranks on Freedom251

Best Network Simulation Software in 2026#13 of 29

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Sources

tetcos.com· checked 1 Oct 2026
tetcos.com/5g.html· checked 1 Oct 2026
tetcos.com/version-comparison.html· checked 1 Oct 2026
tetcos.com/netsim-emulator.html· checked 1 Oct 2026
tetcos.com/netsim-cyber.html· checked 1 Oct 2026
tetcos.com/netsim-licensing.html· checked 1 Oct 2026
tetcos.com/contact.html· checked 1 Oct 2026
tetcos.com/about-us.html· checked 1 Oct 2026
tetcos.com/netsim-acad.html· checked 1 Oct 2026
support.tetcos.com/support/solutions/articles/14000043154-· checked 1 Oct 2026