express vs sails vs hapi vs loopback vs nestjs
Node.js Web Frameworks Comparison
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expresssailshapiloopbacknestjsSimilar Packages:
What's Node.js Web Frameworks?

Node.js web frameworks are essential tools for building server-side applications, providing a structured way to handle HTTP requests, manage routes, and integrate middleware. They simplify the development process by offering pre-built functionalities, allowing developers to focus on building features rather than handling low-level server details. Each framework has its unique strengths, catering to different project needs and developer preferences, from lightweight and flexible solutions to more opinionated and feature-rich environments.

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express36,245,06366,377221 kB1783 months agoMIT
sails39,41822,8873.26 MB5913 months agoMIT
hapi34,98114,671-866 years agoBSD-3-Clause
loopback18,34513,215-184 years agoMIT
nestjs10,651----ISC
Feature Comparison: express vs sails vs hapi vs loopback vs nestjs

Architecture

  • express:

    Express follows a minimalist architecture, allowing developers to structure their applications as they see fit. It provides a thin layer of fundamental web application features, enabling flexibility in design and implementation.

  • sails:

    Sails follows the MVC (Model-View-Controller) architecture, providing a clear separation of concerns. It is designed to work well with real-time applications, making it suitable for data-driven projects.

  • hapi:

    Hapi is built around a plugin system, promoting modularity and reusability. Its architecture encourages the separation of concerns, making it easier to manage complex applications with multiple features.

  • loopback:

    LoopBack adopts a model-driven architecture, allowing developers to define data models and automatically generate RESTful APIs. This approach simplifies the development of data-centric applications.

  • nestjs:

    NestJS uses a modular architecture inspired by Angular, promoting the use of modules, controllers, and services. This structure enhances maintainability and scalability, making it suitable for large applications.

Built-in Features

  • express:

    Express is lightweight and does not come with many built-in features, which allows for flexibility but requires additional packages for functionalities like authentication and validation.

  • sails:

    Sails includes many built-in features such as real-time WebSocket support, automatic RESTful API generation, and a powerful ORM, making it a full-fledged framework for data-driven applications.

  • hapi:

    Hapi comes with a rich set of built-in features, including input validation, caching, authentication, and more, reducing the need for third-party libraries.

  • loopback:

    LoopBack provides extensive built-in features for API creation, including automatic REST API generation, data source connectors, and built-in user authentication.

  • nestjs:

    NestJS includes a powerful dependency injection system, built-in support for WebSockets, and various modules for handling different functionalities, making it a comprehensive solution for complex applications.

Learning Curve

  • express:

    Express has a gentle learning curve, making it easy for beginners to get started with server-side development. Its simplicity allows developers to quickly grasp the core concepts of web applications.

  • sails:

    Sails has a moderate learning curve, especially for developers familiar with the MVC pattern. Its real-time capabilities and built-in features may require additional learning.

  • hapi:

    Hapi has a moderate learning curve due to its extensive configuration options and plugin system. While it offers powerful features, it may take some time to fully understand its architecture.

  • loopback:

    LoopBack has a steeper learning curve compared to Express, particularly for developers unfamiliar with its model-driven approach. However, its strong documentation helps ease the learning process.

  • nestjs:

    NestJS has a moderate to steep learning curve, especially for those not familiar with TypeScript or Angular-like architecture. However, its structured approach can be beneficial for long-term maintainability.

Community and Ecosystem

  • express:

    Express has a large and active community, with numerous middleware and plugins available. Its popularity ensures a wealth of resources and support for developers.

  • sails:

    Sails has a moderate-sized community, with a focus on real-time applications. Its ecosystem includes various plugins and integrations, but it may not be as extensive as Express.

  • hapi:

    Hapi has a smaller but dedicated community. While it may not have as many plugins as Express, its ecosystem is growing, and it offers solid documentation.

  • loopback:

    LoopBack has a supportive community, and while its ecosystem is not as vast as Express, it provides essential tools for API development and integration.

  • nestjs:

    NestJS has rapidly gained popularity, resulting in a growing community and ecosystem. Its integration with TypeScript and support for various libraries enhance its appeal.

Performance

  • express:

    Express is lightweight and performs well for most applications. However, performance can be impacted by the number of middleware used, so careful management is essential.

  • sails:

    Sails is built for real-time applications, which can impact performance if not optimized correctly. Its built-in features provide convenience but may introduce overhead.

  • hapi:

    Hapi is designed for performance and scalability, but its extensive features can add overhead. Proper configuration is necessary to optimize performance for large applications.

  • loopback:

    LoopBack is optimized for API performance, especially when dealing with data sources. However, the complexity of its features can lead to performance trade-offs if not managed properly.

  • nestjs:

    NestJS offers good performance, leveraging TypeScript's features for efficient code execution. Its modular architecture can enhance performance by allowing lazy loading of modules.

How to Choose: express vs sails vs hapi vs loopback vs nestjs
  • express:

    Choose Express if you need a minimal and unopinionated framework that allows for maximum flexibility and control over your application's structure. It's ideal for small to medium-sized applications or APIs where you want to customize every aspect.

  • sails:

    Select Sails if you need a full-featured MVC framework that comes with a lot of built-in features, including real-time capabilities. It's particularly useful for applications that require WebSocket support and are built around a data-driven architecture.

  • hapi:

    Select Hapi if you require a robust framework with built-in support for input validation, caching, authentication, and more. Hapi is great for larger applications where you want a more structured approach and extensive configuration options.

  • loopback:

    Opt for LoopBack if you're building APIs quickly and want to connect to various data sources seamlessly. It provides a strong set of tools for creating RESTful APIs and is particularly useful for applications that require a strong data model and easy integration with databases.

  • nestjs:

    Choose NestJS if you're looking for a framework that combines the best of object-oriented programming and functional programming. It's particularly suitable for large-scale applications, offering a modular architecture and built-in support for TypeScript, making it ideal for enterprise-level applications.

README for express

Express Logo

Fast, unopinionated, minimalist web framework for Node.js.

This project has a Code of Conduct.

Table of contents

NPM Version NPM Install Size NPM Downloads OpenSSF Scorecard Badge

const express = require('express')
const app = express()

app.get('/', function (req, res) {
  res.send('Hello World')
})

app.listen(3000)

Installation

This is a Node.js module available through the npm registry.

Before installing, download and install Node.js. Node.js 0.10 or higher is required.

If this is a brand new project, make sure to create a package.json first with the npm init command.

Installation is done using the npm install command:

$ npm install express

Follow our installing guide for more information.

Features

  • Robust routing
  • Focus on high performance
  • Super-high test coverage
  • HTTP helpers (redirection, caching, etc)
  • View system supporting 14+ template engines
  • Content negotiation
  • Executable for generating applications quickly

Docs & Community

PROTIP Be sure to read Migrating from 3.x to 4.x as well as New features in 4.x.

Quick Start

The quickest way to get started with express is to utilize the executable express(1) to generate an application as shown below:

Install the executable. The executable's major version will match Express's:

$ npm install -g express-generator@4

Create the app:

$ express /tmp/foo && cd /tmp/foo

Install dependencies:

$ npm install

Start the server:

$ npm start

View the website at: http://localhost:3000

Philosophy

The Express philosophy is to provide small, robust tooling for HTTP servers, making it a great solution for single page applications, websites, hybrids, or public HTTP APIs.

Express does not force you to use any specific ORM or template engine. With support for over 14 template engines via Consolidate.js, you can quickly craft your perfect framework.

Examples

To view the examples, clone the Express repo and install the dependencies:

$ git clone https://github.com/expressjs/express.git --depth 1
$ cd express
$ npm install

Then run whichever example you want:

$ node examples/content-negotiation

Contributing

Linux Build Windows Build Test Coverage

The Express.js project welcomes all constructive contributions. Contributions take many forms, from code for bug fixes and enhancements, to additions and fixes to documentation, additional tests, triaging incoming pull requests and issues, and more!

See the Contributing Guide for more technical details on contributing.

Security Issues

If you discover a security vulnerability in Express, please see Security Policies and Procedures.

Running Tests

To run the test suite, first install the dependencies, then run npm test:

$ npm install
$ npm test

People

The original author of Express is TJ Holowaychuk

List of all contributors

TC (Technical Committee)

TC emeriti members

TC emeriti members

Triagers

Triagers emeriti members

Emeritus Triagers

License

MIT