Keras
Keras is a high-level deep learning API in Python, running on top of TensorFlow. Designed for fast experimentation, it offers a clean and flexible interface. Keras' strengths lie in its user-friendly design, making it easy to build and train deep learning models. It supports multiple backend engines and provides a wide range of pre-trained models and layers. Keras has an active community and rich documentation. However, users should note that while Keras is easy to use, advanced users requiring lower-level control might need to use underlying frameworks like TensorFlow directly.