Koa is an expressive HTTP middleware framework for Node.js. It provides a robust foundation for web applications and APIs without bundling middleware.
This is free and open source software.
Key Features
- Uses a cascading middleware stack that enables downstream actions and upstream response manipulation.
- Supports asynchronous functions and Promise-based middleware.
- Provides a Context object encapsulating each HTTP request and response.
- Includes content negotiation, redirection and normalisation of Node.js inconsistencies.
- Delegates to Node.js request and response objects for clean stream handling.
- Offers default error handling.
- Provides a small core without bundled middleware.
- Supports CommonJS and ECMAScript modules.
Website: github.com/koajs/koa
Support:
Developer: Koa contributors
License: MIT License
Koa is written in JavaScript. Learn JavaScript with our recommended free books and free tutorials.
Related Software
| JavaScript Frameworks | |
|---|---|
| Vue.js | Progressive framework for building user interfaces |
| Svelte | Cybernetically enhanced web apps |
| Next.js | Minimalistic framework for server-rendered React applications |
| Angular | One JavaScript framework - mobile and desktop |
| Gatsby | React-based open source framework for creating websites and apps |
| Express | Minimal and flexible Node.js web application framework |
| Astro | Website build tool for the modern web |
| Meteor | Simple environment for building modern web applications |
| koa | Expressive, lightweight foundation for APIs and server applications |
| fastify | Fast, low-overhead toolkit for building robust APIs and services |
| Mithril | Modern client-side framework for building single page applications |
| Ember.js | Battle-tested framework for building modern web applications |
| Fresh | Next generation web framework, built for speed, reliability, and simplicity |
| hapi | Feature-rich server toolkit focused on security and reliability |
| Smart Framework | PHP and JavaScript web framework |
| Aurelia | Build components with plain, vanilla JavaScript/TypeScript |
| AngularJS | Extend HTML vocabulary for your application |
Read our verdict in the software roundup.
 Explore our carefully curated directory of recommended free and open source software, covering every major software category.The directory forms part of our extensive collection of articles for Linux enthusiasts. It includes hundreds of detailed reviews, together with free and open source alternatives to proprietary software from companies such as Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk. LinuxLinks also covers interesting projects worth exploring, Linux-compatible hardware, free programming books and tutorials, and much more. Know a useful free and open source Linux application that we haven’t covered? Tell us about it using our submission form. |
Please read our Comment Policy before commenting.