Deep learning frameworks are essential tools for building and training deep neural networks. Popular frameworks like TensorFlow, PyTorch, and Caffe provide a wide range of functionalities for developing cutting-edge deep learning models. These frameworks also offer additional tools such as TensorBoard for visualization, TFX for production pipelines, and TorchServe for model serving, making them indispensable for deep learning practitioners. With a variety of frameworks available, developers can choose the one that best suits their needs and preferences for deep learning projects.