PyTorch and TensorFlow are two of the most popular deep learning frameworks.
PyTorch was developed by Facebook (Meta) and released to the public in 2016.
PyTorch is a low-level API for NLP (natural language processing) and computer vision. It is a more powerful version of Numpy.
TensorFlow was developed by Google and released to the public in 2015. Production and research are the main uses of TensorFlow.