# rendrjs/rendr

Render your Backbone.js apps on the client and the server, using Node.js.

Repository: https://github.com/rendrjs/rendr
Canonical: https://ross.abutalabs.com/products/rendr
Language: JavaScript
License: MIT
License Family: permissive
Last push: 2020-04-29T22:43:18+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": 5054, "days_push": 2317, "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 4053, forks 303 (observed 2026-08-28T04:08:33.879928+00:00)

## What it is
Rendr is a small JavaScript library that lets you run Backbone.js apps on both the client and the server, rendering fully-formed HTML on the server while keeping a client-side MVC feel. It was created by Airbnb and is distributed as an npm package under the MIT license.

## Use cases
- server-side render a Backbone.js app for SEO
- serve fully-formed HTML for deep links of a single-page app
- share application logic between client and server
- build an isomorphic JavaScript web app with Express
- avoid maintaining separate client and server codebases

## When to choose
- you have an existing Backbone.js app and need server-side rendering
- you want a minimal library rather than a full framework
- you need SEO-friendly HTML from a client-side MVC app on Node.js

## When to avoid
- you are starting a new project - modern frameworks like Next.js are actively maintained
- you don't use Backbone.js
- you need long-term support or recent updates - the last release was in 2020

## Facets
- artifact type: library
- maturity: abandoned
- function: ssr, web-framework, templating, middleware
- domain: web-development, frontend, backend
- platform: -
- tags: backbonejs, isomorphic, universal-javascript, express-middleware, mvc, nodejs, web-server, javascript

## Member repositories
- rendrjs/rendr (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:33.879928+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 2026-08-29T18:23:38.782385+00:00, confidence not recorded.
  - readme: https://github.com/rendrjs/rendr (fetched 2026-08-28T04:08:33.879928+00:00, sha 534be18ce509)
  - registry_npm: https://registry.npmjs.org/rendr (fetched 2026-08-29T09:16:10.516885+00:00, sha 281fcb9331b8)
- Data as of 2026-08-30T08:39:29.467469+00:00.