As described perfectly on its home page, Express is a minimal and flexible Node.js
web application framework, providing a robust set of features for building single, multipage, and hybrid web applications. In other words, it provides all the tools and basic building blocks you need to get a web server up and running by writing very little code. It puts the power in focusing on writing your application and not worrying about the nuts and bolts that go into making the basic stuff work in your hands.
The Express framework is one of the most popular Node-based web frameworks and one of the single most popular packages available in npm. It is built based on the Sinatra web framework, which is quite popular in the Ruby world. There are a lot of frameworks across languages that take inspiration from Sinatra's simplicity, such as PHP's Laravel framework....
