NetSim by Tetcos
NetSim by Tetcos is a packet-level, discrete-event simulator and emulator for wired and wireless communication networks.
What NetSim by Tetcos is
NetSim by Tetcos is a packet-level, discrete-event simulator and emulator for wired and wireless communication networks. Its 5G and 6G modeling covers end-to-end networks with gNB, UE, 5G Core, MIMO, beamforming, network slicing, and configurable propagation. Users can modify C source code supplied for every layer of the 5G stack to build custom protocols, and 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 to real hardware and live applications, with traffic subject to 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 platforms. NetSim runs on Windows; emulator setup calls for a dedicated Windows 10 or 11 system. Lite is free for individual use. Other listed edition prices are on request, and Tetcos offers technical support by ticket, email, and phone, stating that replies arrive within 24 hours.
Good
- Models end-to-end 5G and 6G networks
- Modifiable C source for the 5G stack
- Python interface supports automation and AI/ML workflows
- Emulator connects simulations to real hardware
- Lite is free for individual use
Watch out
- Windows platform only
- Emulator setup calls for dedicated Windows 10 or 11 system
- Prices for Academic, Standard, and Pro are on request
Who it suits
NetSim may suit universities, defence labs, telecom operators, and research groups working on network simulation or emulation. Its Cyber edition is aimed at power-system cyber-physical testbeds.
Verdict
NetSim combines network simulation with hardware emulation and protocol customization. Confirm that the Windows requirement and edition-specific capabilities fit your intended setup.
Plans and prices
From NetSim by Tetcos's own pricing page, checked 1 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| NetSim Lite | Free | Free for individual use · free |
| NetSim Academic | Priced on request | 100 nodes · 35+ inbuilt lab experiments · academic pricing |
| NetSim Pro | Priced on request | 5000 nodes · all technology libraries · priority support · Cyber and Astra add-ons |
| NetSim Standard | Priced on request | 500 nodes · protocol source C code · Python, MATLAB, SUMO, Wireshark interfaces · emulator |
The facts
Each one read from NetSim by Tetcos's own pages, with the date it was checked.
What it does
- 5G and 6G
- NetSim models end-to-end 5G/6G networks with gNB, UE, 5G Core, MIMO, beamforming, network slicing, and configurable propagation.checked 1 Oct 2026
- Academic capabilities
- NetSim Academic includes an easy-to-use GUI, packet animation, dynamic plots, a results dashboard, and 35+ inbuilt labs.checked 1 Oct 2026
- Core purpose
- NetSim is a packet-level, discrete-event network simulator and emulator for wired and wireless communication networks.checked 1 Oct 2026
- Cybersecurity
- NetSim Cyber provides a network and attack-emulation layer for power-system cyber-physical testbeds.checked 1 Oct 2026
- Hardware emulation
- The NetSim Emulator connects simulations to real hardware and live applications, with traffic passing through configured delay, loss, and error conditions.checked 1 Oct 2026
- Integrations
- NetSim Standard and Pro interface with Python, MATLAB, SUMO, and Wireshark.checked 1 Oct 2026
- License security
- Cloud licensing exchanges only license-handshake data, while simulation data and user files remain local.checked 1 Oct 2026
- On-premises licensing
- On-premises floating licensing keeps communication within the customer network and can operate without internet after initial setup.checked 1 Oct 2026
- Power-system integrations
- NetSim Cyber directly interfaces with OPAL-RT, RTDS, HYPERSIM, PSCAD, MATLAB/Simulink, Typhoon HIL, OpenPMU, and openPDC.checked 1 Oct 2026
- Protocol source
- Every layer of the 5G stack ships with C source code that users can modify to build custom protocols.checked 1 Oct 2026
- Python interface
- An external Python interface supports automation, AI/ML workflows, and run-time control.checked 1 Oct 2026
- Support
- Tetcos offers technical support through tickets, email, and phone, and states that replies arrive within 24 hours.checked 1 Oct 2026
- Target users
- Tetcos lists universities, defence labs, telecom operators, and research groups as NetSim users.checked 1 Oct 2026
The company
- Headquarters
- Bangalore, Indiachecked 28 Sep 2026
Where it runs
- Windows requirement
- The emulator setup specifies a dedicated system running NetSim on Windows 10 or 11.checked 1 Oct 2026
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