OMNeT++

If you are looking to establish a new network, you'll probably start by running a simulation to ensure the interaction between elements like routers, nodes, switches, access points, and so on, are smooth and on par with the behavior, you are looking for.

A network simulation is definitely needed for such a task, and they are plenty out there. In case you're not happy with what the market has to offer, you could consider building your own network simulator. OMNeT++ is a well-know com component-based C++ simulation library able to help one build simulators. This modular framework sports a good number of models and domain-specific functions, ready to be assembled into whatever shape you have in mind.

While it allows you to build simulators, OMNeT++ does not fit into the same boots. The library simply offers a component architecture for models. These models represent a cluster of components or modules, programmed in C++ and mustered together using NED. NED (NEtwork Description) is OMNeT++'s proprietary language dealing with model topology and is an important part of building simulators.

A network simulator is nothing but a program, and most programs need a GUI. OMNeT++ offers extensive GUI support along with the modular frame, allowing for quick and effortless integration into your apps.

Besides the simulation kernel and NED language, the library packs components like Eclipse-based IDE, interactive simulation runtime GUI (Qtenv), Command-line support (Cmdenv), miscellaneous utilities, and extensive documentation and samples for anyone finding themselves in a pickle.

For the casual user, OMNeT++ might not sound important or familiar at all. Nevertheless, this professional library was put together to help all individuals interested in building their own network simulators, offering an extensive set of tools that should cover most needs.