There is an article about the best Node.js frameworks
Please share your opinion on which of them and not only of them do you use
Framework for what needs? Since in that article are frameworks for different needs, there is express.js which acts as a web server, these is socket.io which transfers data through WebSockets, these are not related at all. Right now I would of course recommend only strapi. I use it as a web server, as a CRM, as a CMS, as an API builder, that’s my swiss knife for the last year.
It really depends entirely on what type of app and use case you need. Let say if you want to build a web you can use Express.js, very good for me. When it comes to building API you have more choices here, Express, Restify, Hapi, etc. You can learn more about What is Node.js and Why You Should Use Node.js as Your Backend