NEURObjects is a set of C++ library classes for neural network development, exploiting the potentialities of object-oriented design and programming. The main goal of the library consists in supporting experimental research in neural networks and fast prototyping of inductive machine learning applications. We present NEURObjects design issues, its main functionalities, and programming examples, showing how to map neural network concepts into the design of library classes. Key words: Neural network development; Fast prototyping of neural network applications; Object Oriented programming; Library of C++ classes.