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SPECIFICTION
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NetSim by Tetcos

tetcos.com

Free plan Windows
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Spec score 7.4 #25 of 31 in Network Simulation Software

What it is

NetSim by Tetcos is a packet-level, discrete-event simulator and emulator for wired and wireless communication networks. It models end-to-end 5G and 6G systems with gNB, UE, 5G Core, MIMO, beamforming, network slicing, and configurable propagation. Each 5G stack layer includes C source code that users can modify for custom protocols, while an external Python interface supports automation, AI/ML workflows, and runtime control. Standard and Pro editions interface with Python, MATLAB, SUMO, and Wireshark. The Emulator connects simulations with real hardware and live applications, applying configured delay, loss, and error conditions. NetSim Cyber adds network and attack emulation for power-system cyber-physical testbeds and interfaces with listed power-system tools. Licensing can remain local through on-premises floating deployment, and cloud licensing exchanges only handshake data. NetSim runs on Windows; emulator setup specifies a dedicated Windows 10 or 11 machine.

Spec sheet

Integrations
NetSim Standard and Pro interface with Python, MATLAB, SUMO, and Wireshark.Read 1 Oct 2026 · tetcos.com
Support
Tetcos offers technical support through tickets, email, and phone, and states that replies arrive within 24 hours.Read 1 Oct 2026 · tetcos.com
Headquarters
Bangalore, IndiaRead 28 Sep 2026 · tetcos.com
5G and 6G
NetSim models end-to-end 5G/6G networks with gNB, UE, 5G Core, MIMO, beamforming, network slicing, and configurable propagation.Read 1 Oct 2026 · tetcos.com
Academic capabilities
NetSim Academic includes an easy-to-use GUI, packet animation, dynamic plots, a results dashboard, and 35+ inbuilt labs.Read 1 Oct 2026 · tetcos.com
Core purpose
NetSim is a packet-level, discrete-event network simulator and emulator for wired and wireless communication networks.Read 1 Oct 2026 · tetcos.com
Cybersecurity
NetSim Cyber provides a network and attack-emulation layer for power-system cyber-physical testbeds.Read 1 Oct 2026 · tetcos.com
Hardware emulation
The NetSim Emulator connects simulations to real hardware and live applications, with traffic passing through configured delay, loss, and error conditions.Read 1 Oct 2026 · tetcos.com
License security
Cloud licensing exchanges only license-handshake data, while simulation data and user files remain local.Read 1 Oct 2026 · tetcos.com
On-premises licensing
On-premises floating licensing keeps communication within the customer network and can operate without internet after initial setup.Read 1 Oct 2026 · tetcos.com
Power-system integrations
NetSim Cyber directly interfaces with OPAL-RT, RTDS, HYPERSIM, PSCAD, MATLAB/Simulink, Typhoon HIL, OpenPMU, and openPDC.Read 1 Oct 2026 · tetcos.com
Protocol source
Every layer of the 5G stack ships with C source code that users can modify to build custom protocols.Read 1 Oct 2026 · tetcos.com
Python interface
An external Python interface supports automation, AI/ML workflows, and run-time control.Read 1 Oct 2026 · tetcos.com
Target users
Tetcos lists universities, defence labs, telecom operators, and research groups as NetSim users.Read 1 Oct 2026 · tetcos.com
Windows requirement
The emulator setup specifies a dedicated system running NetSim on Windows 10 or 11.Read 1 Oct 2026 · tetcos.com

Plans and prices

NetSim Lite Free free Free for individual use Read 1 Oct 2026 · support.tetcos.com
NetSim Academic Priced on request 100 nodes · 35+ inbuilt lab experiments · academic pricing Read 1 Oct 2026 · tetcos.com
NetSim Pro Priced on request 5000 nodes · all technology libraries · priority support · Cyber and Astra add-ons Read 1 Oct 2026 · tetcos.com
NetSim Standard Priced on request 500 nodes · protocol source C code · Python, MATLAB, SUMO, Wireshark interfaces · emulator Read 1 Oct 2026 · tetcos.com

Every NetSim by Tetcos plan and price →

Strong points and limits

Strong points

  • Packet-level discrete-event simulation
  • Modifiable C source for 5G layers
  • Python automation interface
  • Real hardware and live-application emulation
  • Free Lite plan for individual use

Limits

  • Windows-only platform
  • Academic plan documents a 100-node limit
  • Emulator setup requires dedicated Windows 10 or 11

Who it suits

Tetcos lists universities, defence labs, telecom operators, and research groups as NetSim users. It suits teams needing network simulation, automation, hardware-in-the-loop, or power-system cyber testbeds on Windows.

Verdict

NetSim spans protocol development, 5G/6G modeling, emulation, and cyber-physical testing. Edition differences matter: higher plans add node capacity, interfaces, libraries, support, and add-ons, but their prices require inquiry.

Where Specifiction places it

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