The CORE community is very active on the CORE Discord server. The most recent CORE release, 9.0.1, was released in November 2022. CORE consists of a GUI for drawing topologies of lightweight virtual machines, and Python modules for scripting network emulation 2. The Common Open Research Emulator (CORE) is still active. The most recent release was 0.36.1, released in January, 2023. It provides a command-line-interface for orchestrating and managing container-based networking labs and supports containerized router images available from the major networking vendors. Containerlab is an open-source network emulator that quickly builds network test environments in a devops-style workflow. ContainerlabĬontainerlab is still very active. Version 3.5.3 was released in April 2022. The project maintainers say it is open source but you must provide you name and e-mail address to download the application source code. It enables development of and experimentation with a variety of data-link layer, network layer, and transport layer networking protocols in networks consisting of any combination of wide-area-networking (WAN), local-area-networking (LAN), or wireless-local-area-networking (WLAN) links 1. The cnet network simulator is actively maintained. CloudSim release 6 was delivered in August, 2022. ![]() It is part of an ecosystem of projects and extensions, such as iFogSim. Cloudsim is a network simulator that enables modeling, simulation, and experimentation of emerging Cloud computing infrastructures and application services. Cloonix adopted a new release numbering scheme since I reviewed it in 2017. The Cloonix web site now has a new address at: and theCloonix project now hosts code on Github. Cloonix has both a command-line-interface and a graphical user interface. Cloonix stitches together Linux networking tools to make it easy to emulate complex networks by linking virtual machines and containers. ![]() CloonixĬloonix version 28 was released in January 2023. See below for a brief update about each tool.īelow is a list of the tools previously featured in my blog that are, in my opinion, still actively supported. I also found seven new projects that you can try. Of all the network emulators and network simulators I mentioned in my blog over the years, I found that eighteen of them are still active projects. I also reviewed the development and support status of all the network emulators and network simulators previously featured in my blog. I surveyed the current state of the art in open-source network emulation and simulation.
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