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Side-by-side comparison

Pick up to four tools and compare adoption, momentum and maintenance at a glance. The crown marks the leader in each row.

Eclipse Mosquitto

Lightweight, ubiquitous open-source MQTT broker; the default choice for small deployments and gateways.

EMQX

Highly scalable Erlang MQTT 5 broker and platform with clustering, rule engine and data bridges.

MQTT.js

The standard MQTT client for Node.js and browsers (over WebSockets), supporting MQTT 3.1.1 and 5.

Eclipse Paho

Family of MQTT client libraries for Python, C, Java and more; paho-mqtt is the default Python client.

Head to head

Metric	Eclipse Mosquitto	EMQX	MQTT.js	Eclipse Paho
Stars	11.3k	16.9k	9.1k	2.4k
Weekly downloads	n/a	n/a	3.6M	3M
Download growth	n/a	n/a	+12%	+44%
Popularity score	74/100	77/100	77/100	71/100
Forks	2.7k	2.6k	1.5k	751
Open issues	920	266	45	128
Last commit	5d ago	today	3w ago	1w ago
Latest version	n/a	n/a	5.16.1	2.2.0Nov 4, 2026
First released	2016	2012	2011	2015
Signals	Popular	Popular	Popular	Popular
Listed in	Embedded & IoT › IoT Messaging & Protocols	Embedded & IoT › IoT Messaging & Protocols	Embedded & IoT › IoT Messaging & Protocols	Embedded & IoT › IoT Messaging & Protocols

Weekly downloads over time

Hover for exact values; switch to log scale for tools of very different sizes. Not shown (no comparable download data): Eclipse Mosquitto, EMQX, Eclipse Paho.

Eclipse Mosquitto

Lightweight, ubiquitous open-source MQTT broker; the default choice for small deployments and gateways.

EMQX

Highly scalable Erlang MQTT 5 broker and platform with clustering, rule engine and data bridges.

MQTT.js

The standard MQTT client for Node.js and browsers (over WebSockets), supporting MQTT 3.1.1 and 5.

Eclipse Paho

Family of MQTT client libraries for Python, C, Java and more; paho-mqtt is the default Python client.

Head to head

Metric	Eclipse Mosquitto	EMQX	MQTT.js	Eclipse Paho
Stars	11.3k	16.9k	9.1k	2.4k
Weekly downloads	n/a	n/a	3.6M	3M
Download growth	n/a	n/a	+12%	+44%
Popularity score	74/100	77/100	77/100	71/100
Forks	2.7k	2.6k	1.5k	751
Open issues	920	266	45	128
Last commit	5d ago	today	3w ago	1w ago
Latest version	n/a	n/a	5.16.1	2.2.0Nov 4, 2026
First released	2016	2012	2011	2015
Signals	Popular	Popular	Popular	Popular
Listed in	Embedded & IoT › IoT Messaging & Protocols	Embedded & IoT › IoT Messaging & Protocols	Embedded & IoT › IoT Messaging & Protocols	Embedded & IoT › IoT Messaging & Protocols

Weekly downloads over time

Hover for exact values; switch to log scale for tools of very different sizes. Not shown (no comparable download data): Eclipse Mosquitto, EMQX, Eclipse Paho.

Side-by-side comparison

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Weekly downloads over time

Head to head

Weekly downloads over time