This includes the lack of proper Qemu support when running VIRL natively on Windows (not recommended), as well as a method to easily add docker containers to your projects. 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. The GNS3 VM is recommended for most situations when you are using Windows or Mac OS. This document will help you decide which emulator or simulator you should use in your GNS3 topologies. This gives you lots of flexibility when building topologies. GNS3 supports multiple emulators which you can use in your GNS3 projects. Configure GNS3 to use an additional remote server.How to use applications with the GNS3 Web interface.Install an appliance from the GNS3 Marketplace.