# jsfiddle/togetherjs

A service for your website that makes it surprisingly easy to collaborate in real-time.

Repository: https://github.com/jsfiddle/togetherjs
Canonical: https://ross.abutalabs.com/products/togetherjs
Homepage: https://togetherjs.com
Language: JavaScript
License: MPL-2.0
License Family: copyleft
Last push: 2026-08-11T22:42:52+00:00

## Health v2 (maintenance only)
Score: 76/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 97, release rhythm 35, longevity 100
- inputs: {"age_days": 5020, "days_push": 22, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 7000, forks 835 (observed 2026-08-28T04:09:52.971357+00:00)

## What it is
TogetherJS is a free, open-source JavaScript library by Mozilla that adds real-time collaboration features to any website via a copy-paste script. Users on the same page can see each other's cursors, edits, and browse together, with a relay hub server (now available as a Cloudflare Workers port) syncing messages.

## Use cases
- add real-time collaboration to my website
- let two users co-browse the same page together
- show shared cursors and live edits between users
- build a collaborative drawing or text editing app
- add co-watching or shared browsing to a web app
- self-host a websocket relay for collaborative sessions

## When to choose
- you want drop-in real-time collaboration on an existing website with minimal setup
- you need shared cursors, audio chat, and co-browsing without building from scratch
- you want a customizable, self-hostable collaboration layer

## When to avoid
- you need support for Internet Explorer or legacy browsers
- you want a fully maintained product with active development and support
- you need collaboration for native mobile or desktop apps rather than the web

## Facets
- artifact type: library
- maturity: maintenance
- function: websocket, web-framework, developer-tools
- domain: web-development, frontend, real-time
- platform: browser
- tags: real-time-collaboration, co-browsing, shared-cursors, webrtc, cloudflare-workers, mozilla, real-time, nodejs, web-server, javascript

## Member repositories
- jsfiddle/togetherjs (main) score 76

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:52.971357+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 2026-08-29T17:40:52.047835+00:00, confidence not recorded.
  - readme: https://github.com/jsfiddle/togetherjs (fetched 2026-08-28T04:09:52.971357+00:00, sha 3dfac609c339)
  - homepage: https://togetherjs.com (fetched 2026-08-29T08:36:58.620676+00:00, sha 2b5d861d1129)
  - site_page: https://togetherjs.com/docs (fetched 2026-08-29T08:36:58.630207+00:00, sha ccb595f5a8a3)
  - site_page: https://togetherjs.com/docs/contributing.html (fetched 2026-08-29T08:36:58.633176+00:00, sha 72fa01431720)
  - site_page: https://togetherjs.com/faq.html (fetched 2026-08-29T08:36:58.636703+00:00, sha 234a1a62ed14)
- Data as of 2026-08-30T08:39:29.467469+00:00.