What is Node.js?

Build fast and scalable apps

Contrary to what many people think, Node.js is a runtime for JavaScript, not a programming language itself. It allows the JavaScript code to run not only in browsers but also on servers. It is great for building web apps that are fast and scalable. It’s also worth mentioning that although Node.js supports JavaScript natively, using Node.js you can write code in various languages, such as TypeScript, CoffeeScript, EcmaScript, and others.

The majority of the websites use JS

Currently, JavaScript is the only reasonable choice when it comes to the front end. To a greater or lesser extent, most of the websites use JS. Apart from that, it has reached servers in the form of services or desktop apps taking advantage of Node.js runtime.


Why you should consider Node.js


It’s open-source (under the MIT license) so there are no royalty fees for using it.

Fast and scalable

It’s fast and highly scalable due to its lightweight I/O model.

A variety of apps

It allows building any kind of apps: web-apps, APIs, desktop apps.


It’s cross-platform – you can deploy Node.js app on any operating system.

Open-source packages

It offers thousands of free open source packages, tools, and frameworks.

A thriving community

The fastest growing and most active community of developers.

A smaller team

It allows using the same technology on the back end and front end, so your development team can be smaller and more agile.

A well-known technology

It grants access to a large pool of developers – in 2020, it was the most popular technology, used by 51,4% of developers (Stack Overflow).

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Tomasz Kowalczyk
CEO at NeuroSYS

Features of Node.js

Front end and back end

With Node.js both the front end and back end can be coded with JavaScript. Providing the same programming language for the whole project lowers the risk and means that many libraries can be shared, which simply saves time.

Asynchronous communication

All Node.js APIs are asynchronous, which means that any call made to the Node.js server doesn’t block it until the response for the call is ready. With Node.js the response is delivered with the use of events that are emitted when data is ready to get returned. This approach allows greater flexibility and better use of computing power and memory, both by the server application and client application.


With so many areas of operation of this runtime environment, everything related to it is gaining in popularity and developing rapidly. Node.js works very well on most operating systems.

Clean code

TypeScript is an excellent extension of the JavaScript language, with support for types. It makes the code cleaner and we can learn about potential errors much earlier.

Fast development with ready modules

Node.js comes with an NPM (Node Package Manager) – a big and constantly growing library of ready-made modules, libraries, and tools. They can be used to streamline and shorten the development process in a significant way.


Node.js allows a low footprint on the app server at hand so that it allocates resources when needed instead of allocating a large number of resources in advance. While a server waits for a response from a database, it continues to perform other operations, and only when the database responds, does the server allocate resources to process the response.


Node.js applications can be hosted on any operating system, so you can have the same code-base for your application, no matter what operating system it needs to run on.

Benefits of Node.js

With Node.js you can build cross-platform applications that are fast and efficient.



Node.js runs on V8 JavaScript Engine, which is also used for the Google Chrome browser. This high-performance engine reinforces runtime speed. Thus, even multiple operations taking place simultaneously are performed smoother, faster, and saving significant resources.



Node.js apps are typically characterized by higher scalability than other popular frameworks thanks to a non-blocking I/O and event-driven model. The technology is a perfect choice for data-intensive, networking, and real-time collaboration applications.



Node.js provides apps with high efficiency. One of the reasons is that it bridges the gap between front-end and back-end developers. For a person working with JavaScript, learning this technology is much easier than competing ones. Node.js works very well on most operating systems.


Where to use Node.js

Real-time applications

Chats, communicators, WebSocket based apps

Data streaming applications

Video, audio, and data streaming


Based on different Node.js frameworks, e.g. Nest.js, Feathers.js, Express.js

Cross-platform desktop apps

With Electron.js you can build the app with HTML, CSS, and JavaScript.

IoT systems

A framework that can handle real-time applications and heavy data flow.

Microservices based apps

Convert a large structure into smaller, independent pieces, namely microservices.

Single-page applications

With React.js, Angular.js, or Vue.js


They use Node.js

Being one of the most popular technologies, many well-known and global companies take advantage of Node.js extraordinary features. These are among others:


At NeuroSYS, we specialize in custom software development.

We offer a comprehensive range of services for streamlining product development, starting from the ideation stage to making it market-ready.

Having almost 100 specialists on board, we’ve delivered multiple Node.js projects for business owners from various industry fields. Our Node.js development process lets our clients go smoothly through the project, with minimum risk.

Don’t know how to start?

Check out how you can start working with us with minimum risk and no commitment, getting the maximum value for your business.


A short, free consultation will help you gain new knowledge about your digital product and get to know us better, no strings attached.

It is an exhaustive assessment of your application, paying special attention to code quality, key functionalities, proper documentation, and security issues.

A development process audit will assess a variety of your processes, such as communication and project management – just in 2 weeks.

A development trial helps you to lower the risk of hiring an unsuitable IT company.

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