# josephg/ShareJS

Collaborative editing in any app

Repository: https://github.com/josephg/ShareJS
Canonical: https://ross.abutalabs.com/products/sharejs
Language: JavaScript
License: NOASSERTION
License Family: other
Last push: 2016-09-12T00:37:39+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5616, "days_push": 3643, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4982, forks 454 (observed 2026-08-28T04:09:04.199118+00:00)

## What it is
ShareJS is a server and client library for concurrent collaborative editing of text and JSON documents using operational transformation (OT). It has been superseded by ShareDB and is no longer maintained.

## Use cases
- add real-time collaborative editing to a web app
- sync shared JSON documents between multiple clients
- build a collaborative text editor
- implement concurrent editing with operational transform
- let multiple users edit the same document simultaneously

## When to choose
- you need a proven OT-based collaboration library for a legacy NodeJS stack
- you want collaborative editing over plain text or JSON with browser and Node clients

## When to avoid
- you are starting a new project - use ShareDB instead
- you need actively maintained software or recent security fixes
- you need OT types beyond text and JSON

## Facets
- artifact type: library
- maturity: abandoned
- function: websocket, rpc, serialization, concurrency
- domain: web-development, developer-tools
- platform: browser
- tags: operational-transform, collaborative-editing, real-time-sync, superseded-by-sharedb, real-time, nodejs, web-server

## Member repositories
- josephg/ShareJS (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:04.199118+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 2026-08-29T18:17:41.529669+00:00, confidence not recorded.
  - readme: https://github.com/josephg/ShareJS (fetched 2026-08-28T04:09:04.199118+00:00, sha 5272b22ced67)
- Data as of 2026-08-30T08:39:29.467469+00:00.