# pump-io/pump.io

Social server with an ActivityStreams API

Repository: https://github.com/pump-io/pump.io
Canonical: https://ross.abutalabs.com/products/pumpio
Homepage: http://pumpio.org/
Language: JavaScript
License: Apache-2.0
License Family: permissive
Topics: federation, javascript, social-network, decentralization, nodejs, social, activitystreams, pump-io
Last push: 2026-02-12T15:35:40+00:00

## Health v2 (maintenance only)
Score: 53/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 67, release rhythm 8, longevity 100
- inputs: {"age_days": 5479, "days_push": 202, "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 2239, forks 328 (observed 2026-08-28T04:06:29.670070+00:00)

## What it is
pump.io is a self-hosted social network server built on Node.js that exposes an ActivityStreams JSON API for posting, following, and federated social activity. It ships with a web UI and can also serve as an activity stream backend for other applications.

## Use cases
- self-host a federated social network
- add an activity stream feed to an existing app
- experiment with decentralized social software
- run a microblogging server with an ActivityStreams API
- post text, images, audio, and video to followers

## When to choose
- you want a self-hosted, federated social server with a documented ActivityStreams API
- you need activity-stream functionality embedded in another application
- you want to experiment with decentralized social software

## When to avoid
- you need ActivityPub federation with Mastodon and the wider fediverse
- you want a modern, actively developed social platform with a large ecosystem
- you need a hosted social network without server administration

## Facets
- artifact type: application
- maturity: maintenance
- function: http-server, api-framework, web-framework, auth
- domain: social-media, web-development, self-hosted, apis, backend
- platform: self-hosted, cross-platform
- tags: activitystreams, federation, decentralization, social-network, microblogging, oauth, nodejs, web-server

## Member repositories
- pump-io/pump.io (main) score 53

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:29.670070+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 2026-08-30T02:44:10.534398+00:00, confidence not recorded.
  - readme: https://github.com/pump-io/pump.io (fetched 2026-08-28T04:06:29.670070+00:00, sha a18f1dc3c734)
  - homepage: http://pumpio.org/ (fetched 2026-08-29T10:24:41.757667+00:00, sha 859e4c3c1a05)
  - registry_npm: https://registry.npmjs.org/pump.io (fetched 2026-08-29T10:24:41.768942+00:00, sha e23beb87c190)
  - site_page: https://pumpio.org/blog/2020/09/pump.io-5.1.4-and-5.0.4-security-releases (fetched 2026-08-29T10:24:41.766939+00:00, sha 40aa4dcb1a9b)
- Data as of 2026-08-30T08:39:29.467469+00:00.