Open Source Linux Emulators

Build, Design and Test your network in a risk-free virtual environment and access the largest networking community to help. Whether you are studying for your first networking exam or building out a state-wide telecommunications network, GNS3 offers an easy way to design and build networks of any size without the need for hardware.

Mininet creates a realistic virtual network, running real kernel, switch and application code, on a single machine (VM, cloud or native), in seconds, with a single command. Because you can easily interact with your network using the Mininet CLI (and API), customize it, share it with others, or deploy it on real hardware, Mininet is useful for development, teaching, and research. Mininet is also a great way to develop, share, and experiment with Software-Defined Networking (SDN) systems using OpenFlow and P4. Mininet is actively developed and supported, and is released under a permissive BSD Open Source license. We encourage you to contribute code, bug reports/fixes, documentation, and anything else that can improve the system! Links are virtual ethernet pairs, which live in the Linux kernel and connect our emulated switches to emulated hosts (processes).

VirtualBox is a powerful open-source full virtualization software that allows a user to run one or more “guest” operating systems simultaneously inside “virtual machines” on a single physical “host” machine. It supports a wide variety of host platforms (Linux, Windows, macOS, Solaris, etc.) and guest OSes, enabling, for example, running Linux on a Windows PC, running Windows Server on a Linux host, or even legacy OSes in a controlled environment. This flexibility makes VirtualBox ideal for developers, testers, sysadmins, or hobbyists who need different OS environments, want to test software across systems, or need isolation for development, sandboxing, or security experiments. VirtualBox offers both a user-friendly GUI as well as a command-line interface and headless mode, making it useful for desktop usage as well as server or automated environments.

- Live Raizo is a linux distribution based on Debian 13 (Trixie) to experiment the system administration on simulated networks and real devices. - GNS3 is the gui used to manipulate the simulators/emulators of networks and systems like QEmu, Docker, Dynamips. - With this GNS3, you can clone as many times as you want the templates of virtual linux machines named "Debian" and "DDebian" that contain many network tools and services. - The prompt and the output of several linux commands are colored to highlight the main informations and to be more userfriendly. - Live Raizo also includes tools to interact with real devices : minicom, putty, Wireshark, as well as DHCP, DNS, FTP, TFTP, HTTP and SSH servers. Services are not started automatically. - It is used by the CFA UTEC of CCI in Seine et Marne in France for networking and Linux administration classes. - You can also open issues here : https://github.com/Raizo62/LiveRaizo Last 64 bits Release : v17.26.01.25i

For new versions, check https://github.com/Darkkey/javaNetSim javaNetSim (Java Network Simulator) - it's a fork of a project jFirewallSim. The main goal of javaNetSim is creating a software to simulate various TCP/IP networks based on Ethernet, WiFi, PPP, etc...

NET-Simulator was created to help lecturers and students in the study of computer networks. Students can build virtural networks in the virtual environment provided by NET-Simulator. These devices are controlled by means of command line interface.

Implement a powerful iSCSI target in python, easily use under most popular systems. It also includes the following features: multi-target, multi-connect/session support chap authentication support header & data digest support erl =2, VTL, etc...

The Cell framework is a scalable server framework written in C#. It's original purpose is for MMOG emulation but can be easily adapted to other areas. The project includes a proof of concept rewrite of the DAoC emulator DOL.

MEM Net - Mote EMulator Network. This project will focus on: 1) MEM - Wireless Sensor Node (mote) emulator 2) MEM Net - network of emulated motes So far, the only released package is “visual-sim-slides”. More comming next !

The Network Simulation Environment (NOSE) has the capability to virtually create complex networks including different types of operation systems very cost-efficient on a single computer.

Raddle is a network emulation framework. It is particularly useful when testing network management systems or teaching people to use them. Raddle supports ping, SNMP, traceroute, and other protocols.

SQS is a project assigned to remote management of computer systems. It provides a means by which a user may control the task queue on a remote computer. The system is flexible and easy to use, configure, and install. It includes secure data transfers.

UMLinuxControlCenter lets you create virtual networks based on user-mode-linux and uml-utilities by drag and drop icons of virtual machines, switches, network-links and the hostsystem. UMLinuxControlCenter is written in C++ using wxWidgets and Xerces.

A perl/Gtk2 GUI for VNUML (http://www.dit.upm.es/vnuml/). This GUI will let you quick prototype your VNUML topology by graphically placing, linking and editing network elements, reading/writing VNUML files and run your simulation right from the GUI.

A server emulator for World of Warcraft, providing the ability for individuals to create their own realms, customised through an easy-to-use C# scripting system, allowing one to create AI, items, quests, and any other in-game functions with ease.

A virtual machine inspired by the concept of IBM's z/VM. The goal is to create a secure, fast and reliable server platform with focus on security with the ability to nest more VMs.

Introduces packet latency and loss between two TUN/TAP interfaces for network simulations.

MQNIC ( Message Queue NIC ) Virtual Link Layer The Message Queue NIC project provides a virtual link layer for qemu/kvm based virtual machines. The virtual link layer provides transport using the Apache ActiveMQ message server or other message bus and eliminates the need for external IP infrastructure to support VM deployments. Based on the ivshmem technology originally developed by Cam Macdonell the mqnic drivers use zero copy vm<->host data transfers and the apache message server to provide low latency, high bandwidth IP support for virtual data centers while simplifying the provisioning of hosted IP. Because the Message Queue NIC appears as a standard IP device on the target machine the integration of MQNIC and traditional IP routing is completely managed by the standard IP routing tools and infrastructure. Transport security is handled by the MQ server which supports multiple levels of encryption and authentication.

Simulation model of IEEE 802.16e for ns-2

PVNet is a project providing a virtual network interface. It generates numbers of pure virtual ethernet adapter. It is tested for Linux kernel 3.0.8 on amd64 cpu. Its code contains a kernel patch and module code. You can use it to create many ethernet cards. Each device has a single mac address.