Many apps need to load resources from a remote URL. You may want to make a POST request to a REST API, or you may need to fetch a chunk of static content from another server.
Remember that NodeGui apps do not run in a browser and hence do not have access to browser apis. NodeGui app is essentially a Node.js app.
Node Fetch is a light-weight module that brings window.fetch to Node.js.
An example usage would look like this:
Take a look at the Node Fetch docs for a full list of properties.