# infernojs/inferno

:fire: An extremely fast, React-like JavaScript library for building modern user interfaces

Repository: https://github.com/infernojs/inferno
Canonical: https://ross.abutalabs.com/products/inferno
Homepage: https://infernojs.org
Language: JavaScript
License: MIT
License Family: permissive
Topics: inferno, vdom, performance, react, javascript-library, inferno-js, jsx, inferno-component
Last push: 2026-08-19T12:23:11+00:00

## Health v2 (maintenance only)
Score: 91/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 78, longevity 100
- inputs: {"age_days": 4231, "days_push": 14, "days_rel": 148, "gap_med": 16, "n_releases_24m": 12}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 16455, forks 641 (observed 2026-08-28T04:11:16.512486+00:00)

## What it is
Inferno is an extremely fast, React-like JavaScript library for building modern user interfaces on both client and server. It achieves high runtime performance through JSX compiler optimizations, bitwise flag memoization, and minimal DOM diffing overhead.

## Use cases
- build a fast single-page application with a React-like API
- render large DOM trees or real-time data views at 60 FPS
- migrate an existing React app to a lighter library via inferno-compat
- do isomorphic server-side rendering with fast boot from server renders
- use lifecycle events on lightweight functional components
- compile JSX/TSX with Babel, SWC, or TypeScript plugins

## When to choose
- runtime rendering performance is the top priority
- you want React-like concepts with a smaller footprint
- you need isomorphic client/server rendering
- you prefer functional components with lifecycle events

## When to avoid
- you need React Native or mobile development
- you rely on React's fully synthetic event system
- your team depends on the vast React ecosystem and tooling
- you need legacy string refs support

## Facets
- artifact type: library
- maturity: active
- function: frontend-framework, ssr, templating
- domain: web-development, frontend
- platform: browser
- tags: react-like, virtual-dom, jsx, performance, isomorphic, vdom, nodejs, web-server

## Member repositories
- infernojs/inferno (main) score 91

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:16.512486+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 2026-08-29T17:05:05.679133+00:00, confidence not recorded.
  - readme: https://github.com/infernojs/inferno (fetched 2026-08-28T04:11:16.512486+00:00, sha 9b68d6dda7df)
  - homepage: https://infernojs.org (fetched 2026-08-29T08:02:46.449185+00:00, sha 6af3c0ee7e7c)
  - site_page: https://www.infernojs.org/docs/guides/installation (fetched 2026-08-29T08:02:46.458221+00:00, sha 9c4ecacd688e)
  - site_page: https://www.infernojs.org/docs/api/inferno (fetched 2026-08-29T08:02:46.459970+00:00, sha 3b58a7d0c214)
- Data as of 2026-08-30T08:39:29.467469+00:00.