# marblejs/marble

Marble.js - functional reactive Node.js framework for building server-side applications, based on TypeScript and RxJS.

Repository: https://github.com/marblejs/marble
Canonical: https://ross.abutalabs.com/products/marble
Homepage: https://marblejs.com
Language: TypeScript
License: MIT
License Family: permissive
Topics: rxjs, typescript, nodejs, reactive, marble, javascript, stream, observable, functional-programming, framework
Last push: 2025-05-03T09:43:09+00:00

## Health v2 (maintenance only)
Score: 31/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 19, release rhythm 8, longevity 100
- inputs: {"age_days": 3038, "days_push": 487, "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 2146, forks 74 (observed 2026-08-28T04:06:18.767942+00:00)

## What it is
Marble.js is a functional reactive Node.js framework for building server-side applications, built on TypeScript and RxJS. It offers a modular ecosystem with HTTP, WebSockets, and messaging modules plus middleware for logging, body parsing, validation, CORS, and multipart handling.

## Use cases
- build a reactive HTTP API server in TypeScript
- create WebSocket-based server applications
- build event-driven messaging services
- write composable middleware for request handling
- validate request I/O with functional style
- build server-side apps with RxJS streams

## When to avoid
- you prefer mainstream frameworks with large ecosystems like Express or NestJS
- your team is unfamiliar with reactive programming and RxJS
- you need extensive third-party plugin support

## Facets
- artifact type: framework
- maturity: maintenance
- function: web-framework, http-server, websocket, middleware, routing, testing
- domain: backend, web-development, developer-tools
- platform: -
- tags: functional-programming, reactive, rxjs, server-side, observable, streams, nodejs, typescript

## Member repositories
- marblejs/marble (main) score 31

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:18.767942+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 2026-08-30T02:51:10.313985+00:00, confidence not recorded.
  - readme: https://github.com/marblejs/marble (fetched 2026-08-28T04:06:18.767942+00:00, sha 3b1b8ab6ef25)
- Data as of 2026-08-30T08:39:29.467469+00:00.