QualNet is a network simulation software that provides highly comprehensive models for simulating all network features with high fidelity. It allows for extensive extensibility by connecting with other software and hardware applications. QualNet also offers scalability through parallel computing to support large numbers of nodes, and portability across different platforms like Windows. The major elements of QualNet include tools for importing models, tracing packets, visualizing networks in 3D, analyzing simulations, designing protocols, and animating/developing networks.