//- 💫 DOCS > USAGE > DEEP LEARNING > TENSORFLOW / KERAS +infobox +infobox-logos(["tensorflow", 35, 42, "https://www.tensorflow.org"], ["keras", 45, 45, "https://www.keras.io"]) | #[strong Tensorflow / Keras] is the most popular deep learning library. | spaCy provides efficient and powerful feature extraction functionality, | that can be used as a pre-process to any deep learning library. You can | also use Tensorflow and Keras to create spaCy pipeline components, to add | annotations to the #[code Doc] object. +under-construction