share/sharedb
Realtime database backend based on Operational Transformation (OT) observed · 2026-08-28
Health v2 · maintenance only
95/100
- Activity 99
- Release rhythm 87
- Longevity 100
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 49
- age_days: 4902
- days_rel: 8
- days_push: 8
- n_releases_24m: 8
Adoption not part of the score
6535 stars · 457 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
ShareDB is a realtime database backend based on Operational Transformation (OT) for synchronizing JSON documents across clients. It supports concurrent multi-user collaboration, realtime query subscriptions, and integrates with any database via pub/sub for horizontal scaling.
Use cases
- build collaborative document editors with realtime sync
- sync JSON state between multiple users in a web app
- implement multiplayer counters or leaderboards
- add offline change syncing that reconciles on reconnect
- track realtime user presence in an app
When to choose
- you need concurrent multi-user editing of JSON documents with OT
- you want a database-agnostic realtime sync backend that scales horizontally
- you need historic document versions and presence syncing
When to avoid
- you need CRDT-based conflict resolution instead of OT
- you want a turnkey hosted realtime service rather than a backend library
- your data model is not JSON documents
Facets
library · maturity stable
database websocket middleware caching databases web-development backend browser cross-platform operational-transformation collaborative-editing realtime-sync -documents pubsub real-time nodejs
2 sources
- readme: https://github.com/share/sharedb · fetched 2026-08-28 · 6f3b239fc2c1
- registry_npm: https://registry.npmjs.org/sharedb · fetched 2026-08-29 · ddf61c9bb1f5
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| share/sharedb | main | 95 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem