GNU Gneural Network
I agree with the general motivation that having too much AI research in the hands of software companies who keep it proprietary harms transparency and progress. But there is already a lot of neural-network free software, so why another package? For example, these widely used packages are free software, and seemingly more featureful: http://torch.ch/, http://www.deeplearning.net/software/theano/, http://pybrain.org/, https://www.tensorflow.org/, http://leenissen.dk/fann/wp/, http://chainer.org/