eclipse-mosquitto/mosquitto

Health v2 · maintenance only

Flags: no_releases no_license

Adoption not part of the score

11158 stars · 2629 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Eclipse Mosquitto is an open source MQTT message broker implementing MQTT versions 5.0, 3.1.1, and 3.1, written in C and suitable for devices from low-power single-board computers to full servers. It also ships a C/C++ client library (libmosquitto) and command-line publish/subscribe and administration utilities such as mosquitto_pub, mosquitto_sub, and mosquitto_passwd.

Use cases

• run an mqtt broker for iot sensors
• publish and subscribe to mqtt topics from the command line
• self-host a lightweight message broker for home automation
• bridge messages between low-power embedded devices and servers
• add mqtt client functionality to a C or C++ application
• secure mqtt messaging with tls and authentication
• test mqtt integrations against a local broker

When to choose

• you need a lightweight, resource-efficient mqtt broker for iot or embedded devices
• you want a mature, well-documented broker with tls, websockets, and access-control plugin support
• you need a C/C++ mqtt client library or simple pub/sub cli tools
• you are self-hosting messaging for sensors, mobile devices, or microcontrollers

When to avoid

• you need a horizontally scalable clustered broker for millions of concurrent clients
• you require kafka-style persistent log-based streaming rather than lightweight pub/sub
• you want a managed cloud messaging service without operating your own broker
• you need broker features like built-in rule engines or graphical management consoles

Facets

service · maturity stable

message-queue http-server auth middleware cli sdk iot networking developer-tools self-hosted windows cross-platform self-hosted embedded iot c mqtt-broker pub-sub mqtt5 iot-messaging libmosquitto mosquitto-pub mosquitto-sub tls websockets lightweight messaging linux macos docker

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