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ExpressJS

19.7K
15.8K
+ 1
1.5K
Koa

464
399
+ 1
11
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ExpressJS vs Koa: What are the differences?

Developers describe ExpressJS as "Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple". Express is a minimal and flexible node.js web application framework, providing a robust set of features for building single and multi-page, and hybrid web applications. On the other hand, Koa is detailed as "Next generation web framework for node.js". Koa aims to be a smaller, more expressive, and more robust foundation for web applications and APIs. Through leveraging generators Koa allows you to ditch callbacks and greatly increase error-handling. Koa does not bundle any middleware.

ExpressJS and Koa can be categorized as "Microframeworks (Backend)" tools.

Some of the features offered by ExpressJS are:

  • Robust routing
  • HTTP helpers (redirection, caching, etc)
  • View system supporting 14+ template engines

On the other hand, Koa provides the following key features:

  • Provides 3 different kinds of functions as middleware
  • common function
  • async function

ExpressJS and Koa are both open source tools. It seems that ExpressJS with 44.6K GitHub stars and 7.48K forks on GitHub has more adoption than Koa with 26.6K GitHub stars and 2.42K GitHub forks.

According to the StackShare community, ExpressJS has a broader approval, being mentioned in 854 company stacks & 788 developers stacks; compared to Koa, which is listed in 44 company stacks and 31 developer stacks.

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Pros of ExpressJS
Pros of Koa
  • 367
    Simple
  • 322
    Node.js
  • 235
    Javascript
  • 185
    High performance
  • 148
    Robust routing
  • 66
    Middlewares
  • 66
    Open source
  • 53
    Great community
  • 34
    Hybrid web applications
  • 10
    Well documented
  • 8
    Sinatra inspired
  • 5
    Isomorphic js.. superfast and easy
  • 4
    Rapid development
  • 2
    Socket connection
  • 2
    Npm
  • 2
    Event loop
  • 2
    Light weight
  • 2
    Resource available for learning
  • 2
    Xxx
  • 1
    Callbacks
  • 1
    Data stream
  • 5
    Async/Await
  • 5
    JavaScript
  • 1
    REST API

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Cons of ExpressJS
Cons of Koa
  • 23
    Not python
  • 16
    Overrated
  • 14
    No multithreading
  • 6
    Javascript
  • 5
    Not fast
  • 2
    Easily Insecure for Novices
  • 1
    Not a lion
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    What is ExpressJS?

    Express is a minimal and flexible node.js web application framework, providing a robust set of features for building single and multi-page, and hybrid web applications.

    What is Koa?

    Koa aims to be a smaller, more expressive, and more robust foundation for web applications and APIs. Through leveraging generators Koa allows you to ditch callbacks and greatly increase error-handling. Koa does not bundle any middleware.

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    What companies use ExpressJS?
    What companies use Koa?
    See which teams inside your own company are using ExpressJS or Koa.
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    What tools integrate with ExpressJS?
    What tools integrate with Koa?

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    What are some alternatives to ExpressJS and Koa?
    React
    Lots of people use React as the V in MVC. Since React makes no assumptions about the rest of your technology stack, it's easy to try it out on a small feature in an existing project.
    Flask
    Flask is intended for getting started very quickly and was developed with best intentions in mind.
    Django
    Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design.
    Go
    Go is expressive, concise, clean, and efficient. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel type system enables flexible and modular program construction. Go compiles quickly to machine code yet has the convenience of garbage collection and the power of run-time reflection. It's a fast, statically typed, compiled language that feels like a dynamically typed, interpreted language.
    NGINX
    nginx [engine x] is an HTTP and reverse proxy server, as well as a mail proxy server, written by Igor Sysoev. According to Netcraft nginx served or proxied 30.46% of the top million busiest sites in Jan 2018.
    See all alternatives