# dimdenGD/ultimate-express

The Ultimate Express. Fastest http server with full Express compatibility, based on µWebSockets.

Repository: https://github.com/dimdenGD/ultimate-express
Canonical: https://ross.abutalabs.com/products/ultimate-express
Language: JavaScript
License: Apache-2.0
License Family: permissive
Last push: 2026-07-31T12:27:51+00:00

## Health v2 (maintenance only)
Score: 56/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 95, release rhythm 8, longevity 51
- inputs: {"age_days": 724, "days_push": 33, "days_rel": 475, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1102, forks 43 (observed 2026-08-28T04:03:35.753557+00:00)

## What it is
A fast re-implementation of Express.js 4 built on µWebSockets, designed as a drop-in replacement with the same API. It validates compatibility by running Express's test suite against it and comparing results.

## Use cases
- replace express with a faster drop-in http server
- speed up node.js rest api performance
- serve http with express api on uwebsockets
- migrate existing express app for higher throughput
- handle high request-per-second workloads in node

## When to choose
- you have an existing Express 4 app and want a large speedup with minimal code changes
- you need Express API compatibility including middleware support
- you need very high req/sec HTTP performance on Node.js >= 22

## When to avoid
- you're on older Node.js versions without a compatible release
- you rely on Express internals or edge-case behaviors not covered by the compatibility tests
- you're starting a new project where a native uWebSockets or other framework fits better

## Facets
- artifact type: library
- maturity: active
- function: http-server, web-framework, middleware, routing, websocket
- domain: web-development, backend, apis, performance
- platform: -
- tags: express-compatible, drop-in-replacement, uwebsockets, performance, nodejs

## Member repositories
- dimdenGD/ultimate-express (main) score 56

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:35.753557+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 2026-08-30T06:45:37.517985+00:00, confidence not recorded.
  - readme: https://github.com/dimdenGD/ultimate-express (fetched 2026-08-28T04:03:35.753557+00:00, sha 1547e09bb683)
  - registry_npm: https://registry.npmjs.org/ultimate-express (fetched 2026-08-29T12:48:27.440041+00:00, sha ca8c91084e25)
- Data as of 2026-08-30T08:39:29.467469+00:00.