Emitter

Distributed publish-subscribe messaging platform over MQTT, for real-time apps and IoT.

PlatformWebfreemium

Emitter is an open-source, distributed publish-subscribe messaging platform built on MQTT, supporting secure channel keys, message history, and Prometheus/StatsD monitoring. It's used for real-time dashboards, chat, gaming, and IoT sensor data, deployable via Docker or Kubernetes. Free to self-host, with a commercial license and support contracts available for production use.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of Emitter - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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