Node-fann is a Node.js binding for FANN (Fast Artificial Neural Network), a library written in C that provides a framework for developing and training artificial neural networks. This binding enables Node.js developers to leverage FANN's capabilities directly in their applications, allowing the creation, training, and running of neural networks using JavaScript. The library is suitable for a variety of machine learning tasks and is designed to be fast and efficient. The GitHub repository provides documentation, installation instructions, and example code to help users get started with integrating neural network functionalities into their Node.js projects.