cocoaNECcocoaNEC 
The latest version of cocoaNEC is 2.0 on Mac Informer. It is a perfect match for 3D Modeling in the Design & Photo category. The app is developed by w7ay.
CocoaNEC is a powerful and free Mac OS X application designed for antenna modeling and simulation. Built with the Cocoa framework, this tool is perfect for engineers and enthusiasts alike who need a reliable platform to design antennas with precision. The app is easy to download and install from the official download page, and its source code is available for free for non-commercial use. Whether you're designing for a single frequency or multiple frequencies, CocoaNEC is the go-to tool for antenna simulations.
The Tiger version of CocoaNEC leverages multiple processor cores to efficiently model antennas across multiple frequencies, making it a great choice for users who need quick and accurate results. Meanwhile, the Snow Leopard version optimizes the use of multiple cores for various other parts of the NEC (Numerical Electromagnetic Code) process, ensuring faster simulations and more accurate designs.