Best node js framework

The introduction and growth of Node.js have changed web development. It gives developers an opportunity to build the server-side of the applications using JavaScript. Now we are ready to discuss three mail Node.js backend frameworks: Express.js, Koa.js, and Sails.js.

What are MVC frameworks for Node.js?
Node MVC frameworks are based on the Model View Controller that consists of three components:

Model (that is business logic)
View (format and layout of information)
Controller (that is able to send requests and updates)
MVC frameworks are quite good for enterprise-grade solutions and give support but are not extremely flexible. On the other hand, it is better to choose a more lightweight Node.js server framework because it allows applications to be maintainable.

Why choose Express.js framework?
Express.js framework gives a wide range of functions for creating single-page, multi-page, or hybrid web applications. A lot of Express.js users say that it is a powerful tool that is able to simplify the testing process using middleware and routing.

As a result, using a routed API, developers can do a lot of tasks, e.g. creating an Express.js REST API server or making routes for a simple web app. Moreover, Express.js API made use of the Node.js manager package node to install a lot of third-party plug-ins. So, it’s easy to implement OAuth integration or social logins.

Nevertheless, the absence of a system can be a problem for developers because it causes inabilities to repair projects. By the way, there are a lot of manual labor-intensive tasks that can influence memory usage.

Express.js is quite good for small or medium projects. For instance, it was used as a middleware framework for PayPal and My Space sites.
You can read more here: https://ourcodeworld.com/articles/read/364/how-to-choose-the-best-nodejs-framework-expressjs-koajs-or-sailsjs