# fusionjs/fusionjs

Modern framework for fast, powerful React apps

Repository: https://github.com/fusionjs/fusionjs
Canonical: https://ross.abutalabs.com/products/fusionjs
Homepage: https://fusionjs.com
Language: TypeScript
License: MIT
License Family: permissive
Topics: fusion, fusionjs, react, server-side-rendering
Last push: 2024-04-23T00:39:57+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3228, "days_push": 863, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1558, forks 138 (observed 2026-08-28T04:05:03.491221+00:00)

## What it is
Fusion.js is Uber's open-source universal web framework for building React applications with server-side rendering out of the box. It uses a plugin-driven architecture that encapsulates frontend and backend logic, with built-in support for code splitting, hot module reloading, and testing utilities.

## Use cases
- build server-side rendered react apps
- universal javascript framework with shared client and server code
- react framework with plugin architecture
- code splitting and bundle splitting for react
- full-stack react app with rpc data fetching
- react app with redux and ssr setup
- integrated testing setup for react apps

## When to choose
- you want SSR React apps with minimal configuration
- you prefer a plugin-based architecture to encapsulate cross-cutting concerns
- you need universal code sharing between server and browser
- you want built-in testing, code splitting, and hot reloading out of the box

## When to avoid
- you prefer mainstream ecosystems like Next.js or Remix with larger communities
- you need a framework with frequent updates and active development
- your project is a simple static site without server rendering needs
- you rely on a broad ecosystem of third-party integrations

## Facets
- artifact type: framework
- maturity: maintenance
- function: web-framework, ssr, routing, state-management, testing
- domain: web-development, frontend, backend
- platform: cross-platform
- tags: react, universal-web-framework, uber, plugin-architecture, code-splitting, hot-module-reloading, typescript, nodejs

## Member repositories
- fusionjs/fusionjs (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:03.491221+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 2026-08-30T04:29:54.213981+00:00, confidence not recorded.
  - readme: https://github.com/fusionjs/fusionjs (fetched 2026-08-28T04:05:03.491221+00:00, sha be343de44505)
  - homepage: https://fusionjs.com (fetched 2026-08-29T11:30:06.055281+00:00, sha 860527832e64)
  - site_page: https://fusionjs.com/docs/overview (fetched 2026-08-29T11:30:06.064670+00:00, sha c0f7cd06a00b)
- Data as of 2026-08-30T08:39:29.467469+00:00.