DBNsim is a web application for training and analysing Deep Belief Networks, a particular kind of artifical neural networks. DBNsim has a Python back end (with Django) and a JavaScript front end (which uses mainly Cytoscape.js and Highcharts).
Deep Belief Networks (DBNs) are a particular architecture of neural nets: they are multi-layered networks where each layer is a Restricted Boltzmann Machine (RBM); in practice, a DBN is a "stack" of RBMs. An RBM is a bipartite undirected graph, typically trained with unsupervised learning.
If you want to know how to get, install and use the app please read the documentation, available in two formats: