NS3

NS3 (ns-3) is a discrete-event network simulator designed for research and education. It's free, open-source software that enables simulation of Internet systems, supporting both IP and non-IP networks with realistic models for Wi-Fi, LTE, TCP, and mobile ad hoc routing protocols.

5.0 (0)

Network Emulators

linux

Download NS3 3.46.1

3.46.1

NS3

5.0 (0)

NS3 (Network Simulator 3) is a powerful, discrete-event network simulator primarily designed for research and educational purposes in the field of computer networking. As a free and open-source software licensed under the GNU GPLv2 license, ns-3 provides researchers, educators, and students with a comprehensive simulation environment for modeling and analyzing complex network behaviors and protocols. The simulator supports a wide range of network technologies including IP and non-IP based networks, with particular strength in wireless/IP simulations involving models for Wi-Fi, LTE, and other wireless systems for layers 1 and 2. Ns-3 also known as Network Simulator 3 distinguishes itself through its emphasis on realistic simulation models that can serve as real-time network emulators, allowing interconnection with real-world systems and reuse of existing protocol implementations. The ns-3 architecture supports research on TCP performance, mobile ad hoc routing protocols, and various other networking topics, making it an invaluable tool for academic research and network protocol development. With its modular design, extensive documentation, and active community support, ns-3 continues to evolve through regular releases that incorporate new models, extensions, and bug fixes contributed by a global community of developers and researchers.

309 Downloads

40.7 MB

Oct 16, 2025

Select Operating System

linux

Your download links will be available in

7 seconds

Please wait while we prepare your download...

Download NS3 (.tar.bz2)

linux 40.7 MB 309 downloads

Download Now

All Versions

NS3 3.46.1

Current Version

Added: Oct 16, 2025

Software Info

Date added

Oct 16, 2025

Developer

nsnam

OS Type

linux

Version

3.46.1

Official Website

www.nsnam.org

Related Software

Cisco Packet Tracer

Cisco Packet Tracer is a powerful network simulation tool developed by Cisco Systems, designed for learning, practicing, and visualizing computer networks, IoT, and cybersecurity concepts. It offers a virtual environment to create, configure, and troubleshoot network topologies with drag-and-drop simplicity, making it ideal for students, educators, and IT professionals. Also known as a network simulator, Packet Tracer supports multi-user collaboration and real-time protocol simulation.

eNSP

eNSP (Enterprise Network Simulation Platform) by Huawei is a powerful network simulator for training and practice with Huawei routers, switches, and security devices. It enables virtual network labs, supporting command-line configuration and certification preparation, such as HCIA and HCIE. Also referred to as a datacom device simulator, eNSP is essential for network engineers and students learning enterprise networking.

GNS3

GNS3 is a free, open-source network simulation tool that emulates complex network topologies using real Cisco, Juniper, and other vendor devices. Ideal for network certification training (e.g., CCNA/CCNP), it enables virtual labs, testing, and troubleshooting without physical hardware. Supports multi-vendor environments via integrations like QEMU and Docker.

OMNeT++

OMNeT++ is an open-source, component-based C++ simulation framework for discrete event modeling, specializing in network simulations. It supports wired/wireless protocols, offers an Eclipse-based IDE, and enables hierarchical model design. Widely used in academia and industry for research, education, and protocol validation, OMNeT++ integrates libraries like INET for realistic network scenarios. Its modular architecture and visualization tools streamline complex simulations.

EVE-NG

EVE-NG (Emulated Virtual Environment - Next Generation) is a powerful, multi-vendor network emulator for designing, testing, and troubleshooting virtual networks. It supports Cisco, Juniper, and other devices, enabling realistic lab simulations for certifications like CCNA/CCNP. Ideal for engineers and students, it offers a web-based interface for seamless topology creation and collaboration.