# deepstreamIO/deepstream.io

deepstream.io server

Repository: https://github.com/deepstreamIO/deepstream.io
Canonical: https://ross.abutalabs.com/products/deepstreamio
Homepage: https://deepstreamio.github.io
Language: TypeScript
License: MIT
License Family: permissive
Topics: deepstream, rpc, pubsub, datasync, realtime, websocket, typescript, authentication, permissions
Last push: 2026-07-27T14:14:04+00:00

## Health v2 (maintenance only)
Score: 96/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 94, release rhythm 95, longevity 100
- inputs: {"age_days": 4315, "days_push": 37, "days_rel": 37, "gap_med": 3.5, "n_releases_24m": 19}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 7187, forks 383 (observed 2026-08-28T04:09:56.503188+00:00)

## What it is
deepstream is an open-source realtime server that synchronizes schema-less records, provides publish-subscribe events, and routes RPCs between clients and backend services over WebSockets. It includes pluggable authentication and a permission language (Valve) for fine-grained access control.

## Use cases
- sync data between clients in realtime
- build a pubsub messaging backend
- add rpc request-response to a webapp
- realtime collaborative app server
- query which users are online
- secure websocket messaging with permissions

## When to choose
- you need fast data-sync, pubsub, and rpc in one self-hosted server
- you want fine-grained per-message permissions and pluggable auth
- you're building realtime web, mobile, or IoT apps at scale

## When to avoid
- you only need simple REST APIs without realtime features
- you prefer a managed cloud realtime service
- you need a lightweight message broker without data-sync concepts

## Facets
- artifact type: service
- maturity: active
- function: websocket, message-queue, rpc, auth, authorization, serialization, caching
- domain: web-development, backend, iot
- platform: self-hosted, cross-platform
- tags: realtime-server, data-sync, pubsub, presence, valve-permissions, real-time, messaging, nodejs, docker

## Member repositories
- deepstreamIO/deepstream.io (main) score 96

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:56.503188+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 2026-08-29T17:39:54.418918+00:00, confidence not recorded.
  - readme: https://github.com/deepstreamIO/deepstream.io (fetched 2026-08-28T04:09:56.503188+00:00, sha 22b677f91b42)
  - homepage: https://deepstreamio.github.io (fetched 2026-08-29T08:35:19.435648+00:00, sha dd13e240552d)
  - registry_npm: https://registry.npmjs.org/deepstream.io (fetched 2026-08-29T08:35:19.444637+00:00, sha 6d337a5bf228)
- Data as of 2026-08-30T08:39:29.467469+00:00.