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pump.io

Streams server for the social web

Social Networks ★ 2.2k stars Medium setup Apache-2.0

pump.io is a stream server that lets users post activities to their followers and to the web, implementing the Activity Streams format. It can be self-hosted as a personal social networking node.

Official siteSource code

Key features

  • Activity Streams social server
  • Personal social networking node
  • Federation support

Strengths

  • Released under the Apache-2.0 license
  • Active community (2.2k GitHub stars)
  • Written in JavaScript
  • Tiny footprint — runs in 256 MB RAM

Is pump.io secure?

OSV.dev has no published security advisories for pump.io's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

Source: OSV.dev, checked 2026-10-14. How this is measured.

pump.io replaces

Self-hosted Twitter alternatives

Health badge

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SelfHostIndex: 46 · fair

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   :alt: SelfHostIndex health score for pump.io
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The score is recomputed on every nightly rebuild from public repository data — see how it is calculated.

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