https://playground.tensorflow.org/ (neural playground, google)

https://vinizinho.net/projects/perceptron-viz/ (perceptron)

http://mccormickml.com/2015/08/26/rbfn-tutorial-part-ii-function-approximation/ (BRF)

https://www.youtube.com/watch?v=2YY8FfQhMME (Hopfield video)

https://phiresky.github.io/kogsys-demos/neural-network-demo (Perceptron, MLP)

https://www.youtube.com/watch?v=vGwemZhPlsA (percetron video)

https://www.youtube.com/watch?v=5u4G23_OohI (gradient descent, 26:30)

https://www.naftaliharris.com/blog/visualizing-k-means-clustering/

https://www.mladdict.com/neural-network-simulator

https://www.cs.hmc.edu/~kpang/nn/som.html (SOM)

https://irath96.github.io/som-demo/ (SOM)

https://www.youtube.com/watch?v=Ilg3gGewQ5U (backpropagation visualiszation)