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Egg

A Node.js framework built on Koa for building larger server-side apps, with plugins and process management.

GitHub Download v4.2.0
Stars
19k
Forks
1.8k
Licence
MIT
Language
TypeScript
Last update
14 days ago
Type
Framework

What it is

Egg is a Node.js framework built on top of Koa, aimed at larger web applications and enterprise-style backends. According to its README, it provides built-in process management, a plugin system, and the ability to customize the framework itself. The README describes it as a monorepo with a main framework package, example apps, and a documentation site.

  • Create a starter web app using the quickstart commands in the README
  • Run the included CommonJS or TypeScript example applications
  • Build backend services that use the plugin system to add functionality
  • Write a custom framework layer on top of Egg using its customization feature

Great for

  • Teams building larger Node.js backend applications that need structure
  • Developers who already know Koa and want a more opinionated layer on top
  • Projects that want to use a plugin ecosystem (the README links to plugins tagged egg-plugin)
  • TypeScript developers, since the project is written in TypeScript and includes a TypeScript example

Not ideal for

  • Beginners looking for a very small, minimal server library: the README lists many features and a monorepo setup, which adds learning overhead
  • Projects that cannot run Node.js 22.18.0 or newer, which the README lists as required
  • Teams not comfortable with the utoo tooling shown in the quickstart, since the README uses it rather than plain npm commands
Step-by-step guide: how to use EggInstall, first run, examples, tips and FAQs
Egg alternativesEgg vs KoaEgg vs ExpressEgg vs Fastify

How to get it

  1. 1

    Install with a package manager

    You'll need: Node.js 22.18.0 or newer (per README) · npm (to install utoo globally) · Docker (only needed for the optional local MySQL/Redis test services)

    Install utoo globally

    npm install --global utoo@latest

    Create a project directory

    mkdir showcase && cd showcase

    Create an Egg app

    ut create egg@beta

    Install dependencies

    ut install
  2. 2

    Run it

    • Run the dev server with `ut run dev` from the project directory
    • Open http://localhost:7001 in a browser
    • Edit files in the created project and check the dev server output
  3. 3

    Get the most out of it

    • Explore the plugin system; the README links to plugins tagged egg-plugin on GitHub
    • Read the documentation at eggjs.org for configuration and framework details
    • Run the included examples (helloworld-commonjs, helloworld-typescript) to compare styles
    • Use `ut run dev:services:start` if you plan to work with the database and Redis test paths

Downloads

Source code (.zip)main branch · straight from GitHubRelease v4.2.0Release notes and sourceOfficial website & docseggjs.org

Strengths

  • Large existing ownership signals: about 19,000 GitHub stars and an MIT license, per the metadata
  • Built-in process management and a plugin system are listed as core features
  • Documentation site and plugin search links are provided in the README

Trade-offs

  • The quickstart relies on the utoo tool (ut commands) rather than the more common npm workflow, which may be unfamiliar
  • Some tests need local MySQL and Redis via Docker, and the README notes specific hard-coded ports for those services
  • The README is truncated in our source, so details beyond the quickstart and dev notes are not verified here

How it compares

ProjectStarsTypeLevelUpdatedBest for
egg (this)19kFrameworkintermediate14 days agoTeams building larger Node.js backend applications that need structure
koa35.7kLibraryintermediate4 days agoNode.js developers who want a minimal web framework they can shape themselves
express69.6kFrameworkintermediate4 days agoDevelopers building JavaScript or Node.js back-end servers
fastify37.3kLibrarybeginner4 days agoNode.js developers building JSON APIs or backend services
langchain149kFrameworkintermediate4 days agoPython developers building LLM-powered applications
langgraph44.3kLibraryintermediate4 days agoPython developers building multi-step AI agents that must survive failures or long waits

Stats synced from GitHub. The assessment above was drafted with AI from the project's README on 2026-10-29 and may miss recent changes — check the README before relying on a command. MIT licence: free to use, modify and distribute, including commercially, as long as you keep the copyright notice.