Today, Netflix open-sourced Polynote, the internal notebook they developed, to the public. It’s not rare these days that big tech companies open sources their internal tools or services, then got popular and adopted by the industry. Amazon AWS, Facebook’s React.js, etc. are two of them. It makes sense. These big tech companies have the best engineers in the industry and more often than not they are facing the biggest challenges that will drive the development of great tools. Netflix’s Polynote could be another one of those great tools and the data science/machine learning industry does need better tools in terms of how to write code, experiment algorithms and visualize data. Here are several things you need to know about this new tool. I’ll try to keep this succinct and to the point so you can quickly read through it and be knowledgeable about the pros and cons of this new choice of our development/research environment.