The GNS3 VM is recommended for most situations when you are using Windows or Mac OS. The GNS3 development team have worked hard to create a lightweight, robust way of creating GNS3 topologies that avoids multiple common issues experienced when using a local install of GNS3.
What is the use of GNS3 VM?
The GNS3 VM feature simply makes it much easier, eliminates the complexity of having to install a VM, configuring the network and integrating this VM with GNS3 as a remote machine.
What is QEMU VM in GNS3?
Qemu is an open-source hardware-emulation and virtualization platform. The GNS3 project provides filesystem images of Qemu-compatible Linux systems that have open-source routing software installed. Qemu is available for the most common operating systems, Linux, Windows, and Mac OS.