Neuroph is lightweight Java NeuralNetwork Framework which can be used to develop common neuralnetwork architectures. Small number of basic classes which correspond to basic NN concepts, and GUI editor makes it easy to learn and use.
Cognity is an object-oriented neuralnetwork library for Java. It's goal is to provide easy-to-use, high level architecture for neuralnetwork computations along with reasonable performance.
Neuroph OCR - Handwriting Recognition is developed to recognize hand written letter and characters. It's engine derived's from the Java NeuralNetwork Framework - Neuroph and as such it can be used as a standalone project or a Neuroph plug in.
LiNNS is not just a NeuralNetwork Simulator, but a NeuralNetwork System - a framework which covers the full lifecycle of a neuralnetwork, from design and research till usage in an external application.