Keras

Keras is a high-level, open source neural networks application programming interface (API) written in Python and capable of running on top of TensorFlow, Microsoft Cognitive Tool Kit (CNTK) or Theano.

It is an alternate way of creating models that offers a lot more flexibility, including creating more complex models.

Keras allows for easy and fast prototyping through user friendliness, modularity, and extensibility. It supports both convolutional networks and recurrent networks, as well as combinations of the two.

it runs on CPU and GPU. It is developed for the purpose of facilitating fast experimentation. Going from idea to result with the least possible delay is crucial to doing good research.