GNS3 has a marketplace with . While not "Cisco iOS," they support many standard protocols:
Follow the prompts to name the device and assign resources (RAM, Idle-PC). : For older Dynamips images, you ios image for gns3
Apple’s iOS (the operating system for iPhones and iPads) cannot run on GNS3. GNS3 is a network simulator designed to emulate routers, switches, and firewalls, not mobile devices. Therefore, this article focuses entirely on Cisco IOS images used to simulate network infrastructure. GNS3 has a marketplace with
There are two primary ways GNS3 runs Cisco software, depending on the age and type of the image: Idle-PC). : For older Dynamips images