Any tools for understanding what a Neural network is learning?

CNN Explainer: Learning Convolutional Neural Networks with Interactive Visualization https://arxiv.org/abs/2004.15004 https://www.youtube.com/watch?v=HnWIHWFbuUQ https://poloclub.github.io/cnn-explainer/

Towards Interpretable Deep Metric Learning with Structural Matching https://arxiv.org/abs/2108.05889 https://github.com/wl-zhao/DIML