GNS3 is free software development software that allows you to build and test your network in a risk-free environment. Currently supported by Galaxy Technologies and the GNS3 community, it is an open-source networking software emulator that allows you to combine virtual and real devices to simulate complex networks to suit your needs. It is popular with many large companies and is also used as a training aid for network technician certification exams.

Graphical Network Simulator is a graphical network simulator. It allows you to create different network topologies directly on your computer. The GNS is often used as a lab bench where you can test a particular technology or circuit. With this software, you can create dynamic network maps for troubleshooting. You can also test over 20 different network vendors in a virtual environment without risk.

Features and functions

You can simulate a real-time network for testing before deployment without needing network hardware. You also can run an OS that emulates the real-world behavior of network equipment. Use existing equipment and expand your current lab by connecting GNS3 topologies directly to it. Quickly run and test multi-vendor equipment without having to purchase hardware. Test your networks before you build them to reduce the time necessary to get your production network up and running.

GNS3 is the best training tool for aspiring network professionals seeking certification without needing a home lab. GNS3 helps our growing community of users, representing some of the world's largest companies in all industries, design and build multi-vendor networks without needing physical hardware infrastructure. You can create, design, and test your network in a risk-free virtual environment and access the largest networking community for help.

Why download GNS3 on Mac?

Overall, GNS3 is an excellent development tool that must-have if your work involves networks or if you are learning about them. This emulator is not only free, but it's also easy to use and offers various features that other similar programs don't have. The only drawback you'll encounter is the difficulty setting it up because of the other programs you'll have to install to make it work smoothly. GNS3 is not a simulator but an emulator! It is worth understanding the difference between the two. An emulator allows you to create a computer or other device model and run the original software inside. All significant components of the device are emulated, including the processor, memory, and I/O devices. In the case of Cisco, the emulator creates a router model and runs the actual Cisco IOS operating system inside. Thus we get a fully functional router.