# egg

🥚🥚🥚🥚 Born to build better enterprise frameworks and apps with Node.js & Koa. https://307.run/eggcode

Repository: https://github.com/eggjs/egg
Canonical: https://ross.abutalabs.com/products/egg
Homepage: https://eggjs.org
Language: TypeScript
License: MIT
License Family: permissive
Topics: egg, framework, koa, koa2, koa-middleware, nodejs, node-framework, enterprise, eggjs
Last push: 2026-08-23T07:12:27+00:00
Link (homepage): https://eggjs.org
Link (site_page): https://eggjs.org/intro/quickstart
Link (site_page): https://eggjs.org/community/faq
Link (site_page): https://eggjs.org/faq

## Health v2 (maintenance only)
Score: 88/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 66, longevity 100
- inputs: {"age_days": 3728, "days_push": 10, "days_rel": 227, "gap_med": 13.5, "n_releases_24m": 11}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 18985, forks 1803 (observed 2026-08-28T04:11:27.321327+00:00)

## What it is
Egg.js is an enterprise-grade web framework for Node.js built on top of Koa, emphasizing convention over configuration and a powerful plugin system. It provides built-in process management, framework customization, and a rich ecosystem of plugins for building large-scale backend applications.

## Use cases
- build a REST API server in Node.js
- enterprise backend web framework with plugin ecosystem
- build MVC web applications on Koa
- create a scalable Node.js server with built-in process management
- customize a team-specific framework on top of Koa
- build a website with server-side rendering in Node.js

## When to choose
- you want a batteries-included, convention-driven Node.js backend framework
- you need a plugin architecture and framework customization for large teams
- you are building enterprise applications on Koa with proven production reliability

## When to avoid
- you prefer minimal, unopinionated frameworks like Express or Fastify
- your team is new to Node.js and wants the largest community ecosystem
- you need a framework outside the Node.js runtime

## Facets
- artifact type: framework
- maturity: stable
- function: web-framework, middleware, routing, plugin-system, http-server
- domain: web-development, backend, developer-tools
- platform: cross-platform
- tags: koa, enterprise, mvc, convention-over-configuration, typescript, nodejs

## Member repositories
- eggjs/egg (main) score 88
- eggjs/examples (examples) score 58

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:27.321327+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:00:42.806901+00:00, confidence not recorded.
  - readme: https://github.com/eggjs/egg (fetched 2026-08-28T04:11:27.321327+00:00, sha dcab10c3bcd8)
  - homepage: https://eggjs.org (fetched 2026-08-29T07:59:45.438245+00:00, sha e87c04e8e339)
  - site_page: https://eggjs.org/intro/quickstart (fetched 2026-08-29T07:59:45.440786+00:00, sha 19d0efbf9861)
  - site_page: https://eggjs.org/community/faq (fetched 2026-08-29T07:59:45.442984+00:00, sha 1945f4e0f9e6)
  - site_page: https://eggjs.org/faq (fetched 2026-08-29T07:59:45.444869+00:00, sha 770df6ee4345)
- Data as of 2026-08-30T08:39:29.467469+00:00.