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Pushpin

Free softwareOpen sourceLocal

Hold live HTTP and WebSocket connections open and push channel updates from your backend.

What you can use it for

Hold live HTTP and WebSocket connections open and push channel updates from your backend.

  • Offload long-lived client connections from a request/response backend.
  • Publish channel messages through HTTP and GRIP instructions.
Workflow coverage and comparison notes

Self-host the GRIP-based long-lived HTTP/WebSocket connection and channel-publishing layer used by Fanout. Does not replace Fastly global edge infrastructure, managed operations or SLA.

Before you switch

Requires server administration, backend integration, security, monitoring and scaling. Replaces the GRIP connection/proxy layer; no managed Fastly edge network, hosting or SLA. Free software does not include free production infrastructure. The reviewed walkthrough demonstrates local development, not production load.

Alternatives to these paid apps

Each comparison covers the workflow described above, rather than every paid feature.