OMNeT++

OMNeT++ is a simulation toolkit used by researchers and developers to create virtual models of computer networks, communication systems, and other distributed systems. It allows users to test and analyze how different network protocols, devices, or configurations behave under various conditions without needing physical hardware. Think of it as a sophisticated, digital lab where you can see how data flows, how networks respond to traffic, or how new technologies might perform—saving time and resources before real-world implementation. It's widely used in academia and industry for designing and improving network systems.